Externalize shared python tools

Note: To be rabased after !607 (merged) and !606 (merged) are merged.

• change Gitlab-CI Docker image to latest LHCb one
• prefer host-binary-tag from PATH (see https://gitlab.cern.ch/lhcb-core/LbPlatformUtils/)
• use xenv from PATH or get it from the Git repository (see https://gitlab.cern.ch/gaudi/xenv)

Although having the scripts as part of Gaudi is desirable, it's also very useful to be able to update/fix them without having to make a new release of Gaudi.

• [2018-02-20 08:23] Validation started with lhcb-gaudi-merge#423
• [2018-02-21 00:03] Automatic merge failed in lhcb-gaudi-head-py3#71
• [2018-02-21 00:07] Automatic merge failed in lhcb-tdr-test#66
• [2018-02-21 00:08] Automatic merge failed in lhcb-gaudi-head#1776
• [2018-02-22 01:03] Automatic merge failed in lhcb-gaudi-head-py3#72
• [2018-02-22 01:07] Automatic merge failed in lhcb-tdr-test#67
• [2018-02-22 01:08] Automatic merge failed in lhcb-gaudi-head#1777
• [2018-02-23 01:03] Automatic merge failed in lhcb-gaudi-head-py3#73
• [2018-02-23 01:06] Automatic merge failed in lhcb-tdr-test#68
• [2018-02-23 01:09] Automatic merge failed in lhcb-gaudi-head#1778
• [2018-02-24 01:03] Automatic merge failed in lhcb-gaudi-head-py3#74
• [2018-02-24 01:10] Automatic merge failed in lhcb-gaudi-head#1779
• [2018-02-24 01:15] Automatic merge failed in lhcb-tdr-test#69
• [2018-02-25 01:05] Automatic merge failed in lhcb-gaudi-head-py3#75
• [2018-02-25 01:06] Automatic merge failed in lhcb-tdr-test#70
• [2018-02-25 01:08] Automatic merge failed in lhcb-gaudi-head#1780
• [2018-02-26 01:03] Automatic merge failed in lhcb-gaudi-head-py3#76
• [2018-02-26 01:06] Automatic merge failed in lhcb-tdr-test#71
• [2018-02-26 01:09] Automatic merge failed in lhcb-gaudi-head#1781
• [2018-02-27 01:03] Automatic merge failed in lhcb-gaudi-head-py3#77
• [2018-02-27 01:07] Automatic merge failed in lhcb-tdr-test#72
• [2018-02-27 01:12] Automatic merge failed in lhcb-gaudi-head#1782
• [2018-02-28 01:03] Automatic merge failed in lhcb-gaudi-head-py3#78
• [2018-02-28 01:06] Automatic merge failed in lhcb-tdr-test#73
• [2018-02-28 01:12] Automatic merge failed in lhcb-gaudi-head#1783
• [2018-03-01 00:03] Automatic merge failed in lhcb-gaudi-head-py3#79
• [2018-03-01 00:06] Automatic merge failed in lhcb-tdr-test#74
• [2018-03-01 00:12] Automatic merge failed in lhcb-gaudi-head#1784
• [2018-03-01 13:05] Automatic merge failed in lhcb-upgrade-hackathon#40
• [2018-03-02 00:05] Automatic merge failed in lhcb-gaudi-head-py3#80
• [2018-03-02 00:05] Automatic merge failed in lhcb-upgrade-hackathon#41
• [2018-03-02 00:06] Automatic merge failed in lhcb-tdr-test#75
• [2018-03-02 00:10] Automatic merge failed in lhcb-gaudi-head#1785
• [2018-03-02 09:45] Automatic merge failed in lhcb-upgrade-hackathon#42
• [2018-03-03 00:03] Automatic merge failed in lhcb-gaudi-head-py3#81
• [2018-03-03 00:04] Automatic merge failed in lhcb-upgrade-hackathon#43
• [2018-03-03 00:05] Automatic merge failed in lhcb-tdr-test#76
• [2018-03-03 00:10] Automatic merge failed in lhcb-gaudi-head#1786
• [2018-03-03 09:56] Automatic merge failed in lhcb-gaudi-head#1787
• [2018-03-04 00:04] Automatic merge failed in lhcb-upgrade-hackathon#44
• [2018-03-04 00:05] Automatic merge failed in lhcb-gaudi-head-py3#82
• [2018-03-04 00:05] Automatic merge failed in lhcb-tdr-test#77
• [2018-03-04 00:06] Automatic merge failed in lhcb-gaudi-head#1788
• [2018-03-05 00:04] Automatic merge failed in lhcb-gaudi-head-py3#83
• [2018-03-05 00:08] Automatic merge failed in lhcb-upgrade-hackathon#45
• [2018-03-05 00:10] Automatic merge failed in lhcb-gaudi-head#1789
• [2018-03-05 00:10] Automatic merge failed in lhcb-tdr-test#78
• [2018-03-06 00:03] Automatic merge failed in lhcb-gaudi-head-py3#84
• [2018-03-06 00:04] Automatic merge failed in lhcb-upgrade-hackathon#46
• [2018-03-06 00:06] Automatic merge failed in lhcb-tdr-test#79
• [2018-03-06 00:08] Automatic merge failed in lhcb-gaudi-head#1790
• [2018-03-07 00:05] Automatic merge failed in lhcb-gaudi-head-py3#85
• [2018-03-07 00:05] Automatic merge failed in lhcb-upgrade-hackathon#47
• [2018-03-07 00:06] Automatic merge failed in lhcb-tdr-test#80
• [2018-03-07 00:13] Automatic merge failed in lhcb-gaudi-head#1791
• [2018-03-07 14:24] Automatic merge failed in lhcb-tdr-test#81
• [2018-03-08 00:04] Automatic merge failed in lhcb-upgrade-hackathon#48
• [2018-03-08 00:04] Automatic merge failed in lhcb-gaudi-head-py3#86
• [2018-03-08 00:06] Automatic merge failed in lhcb-tdr-test#82
• [2018-03-08 00:10] Automatic merge failed in lhcb-gaudi-head#1792
• [2018-03-09 00:05] Automatic merge failed in lhcb-gaudi-head-py3#87
• [2018-03-09 00:07] Automatic merge failed in lhcb-upgrade-hackathon#49
• [2018-03-09 00:08] Automatic merge failed in lhcb-tdr-test#83
• [2018-03-09 00:11] Automatic merge failed in lhcb-gaudi-head#1793
• [2018-03-10 00:04] Automatic merge failed in lhcb-upgrade-hackathon#50
• [2018-03-10 00:06] Automatic merge failed in lhcb-gaudi-head-py3#88
• [2018-03-10 00:08] Automatic merge failed in lhcb-tdr-test#84
• [2018-03-10 00:11] Automatic merge failed in lhcb-gaudi-head#1794
• [2018-03-10 00:46] Automatic merge failed in lhcb-tdr-test#84
• [2018-03-11 00:04] Automatic merge failed in lhcb-upgrade-hackathon#51
• [2018-03-11 00:06] Automatic merge failed in lhcb-gaudi-head-py3#89
• [2018-03-11 00:07] Automatic merge failed in lhcb-tdr-test#85
• [2018-03-11 00:11] Automatic merge failed in lhcb-gaudi-head#1795
• [2018-03-12 00:05] Automatic merge failed in lhcb-gaudi-head-py3#90
• [2018-03-12 00:07] Automatic merge failed in lhcb-upgrade-hackathon#52
• [2018-03-12 00:07] Automatic merge failed in lhcb-tdr-test#86
• [2018-03-12 00:15] Automatic merge failed in lhcb-gaudi-head#1796
• [2018-03-13 00:05] Automatic merge failed in lhcb-gaudi-head-py3#91
• [2018-03-13 00:06] Automatic merge failed in lhcb-upgrade-hackathon#53
• [2018-03-13 00:09] Automatic merge failed in lhcb-tdr-test#87
• [2018-03-13 00:10] Automatic merge failed in lhcb-gaudi-head#1797
• [2018-03-14 00:04] Automatic merge failed in lhcb-gaudi-head-py3#92
• [2018-03-14 00:04] Automatic merge failed in lhcb-upgrade-hackathon#54
• [2018-03-14 00:09] Automatic merge failed in lhcb-tdr-test#88
• [2018-03-14 00:10] Automatic merge failed in lhcb-gaudi-head#1798
• [2018-03-15 00:04] Automatic merge failed in lhcb-gaudi-head-py3#93
• [2018-03-15 00:07] Automatic merge failed in lhcb-tdr-test#89
• [2018-03-15 00:19] Automatic merge failed in lhcb-gaudi-head#1799
• [2018-03-16 00:05] Validation started with lhcb-gaudi-head-py3#94
• [2018-03-16 00:06] Validation started with lhcb-tdr-test#90
• [2018-03-16 00:08] Validation started with lhcb-gaudi-head#1800
• [2018-03-16 08:02] Validation started with lhcb-gaudi-head#1801

added 4 commits

• 7efe4363 - Fix compilation with gcc 5.4 (Ubuntu 16.04)
• 03146bd9 - Use new LHCb CentOS7 Docker images in Gitlab-CI
• 2419aadb - Use host-binary-tag from PATH if available
• 0a2814bc - Take xenv from PATH of clone it from Git repository

Compare with previous version

changed the description

assigned to @hegner

added backport to v29 label

added 1 commit

• 0f54da2d - Take xenv from PATH of clone it from Git repository

Compare with previous version

added 1 commit

• fd4016fa - Take xenv from PATH of clone it from Git repository

Compare with previous version

changed the description

I moved the xenv code to a project in the Gaudi group, as suggested at the meeting.

changed the description

mentioned in merge request !618 (merged)

added 3 commits

• 1febd439 - Use host-binary-tag from PATH if available
• 3fab4bac - Take xenv from PATH of clone it from Git repository
• 077c0570 - Use latest LHCb Docker image

Compare with previous version

changed the description

added 3 commits

• 91e824d4 - Use latest LHCb Docker image
• d11cf964 - Use host-binary-tag from PATH if available
• 25084f3e - Take xenv from PATH of clone it from Git repository

Compare with previous version

removed backport to v29 label

mentioned in commit 561db725

added 10 commits

• 25084f3e...cb38e5ac - 5 commits from branch gaudi:master
• 65ea8717 - Fix compilation with gcc 5.4 (Ubuntu 16.04)
• cb2fd27c - Use latest LHCb Docker image
• b4983c04 - Require Python 2.7 until Python 3 migration is complete
• 7b495916 - Use host-binary-tag from PATH if available
• 9d9d4e06 - Take xenv from PATH of clone it from Git repository

Compare with previous version

changed the description

mentioned in merge request !601 (merged)

added 25 commits

• 9d9d4e06...785a418e - 21 commits from branch gaudi:master
• 9258e3ba - Fix compilation with gcc 5.4 (Ubuntu 16.04)
• 57833ce5 - Use latest LHCb Docker image
• 53f3bc89 - Use host-binary-tag from PATH if available
• b1fe596f - Take xenv from PATH of clone it from Git repository

Compare with previous version