Added new platforms to the list of known ones

• x86_64-centos7-clang50-opt
• x86_64-centos7-clang50-dbg
• x86_64+avx2+fma-centos7-gcc7-opt

• [2017-10-30 14:24] Validation started with lhcb-gaudi-merge#264
• [2017-10-30 19:54] Validation started with lhcb-gaudi-merge#265
• [2017-10-30 21:39] Validation started with lhcb-gaudi-merge#266
• [2017-10-31 00:05] Validation started with lhcb-lcg-dev3#328
• [2017-10-31 00:05] Validation started with lhcb-head#1644
• [2017-10-31 00:05] Validation started with lhcb-clang-test#753
• [2017-10-31 00:05] Validation started with lhcb-gaudi-head#1642
• [2017-10-31 00:06] Validation started with lhcb-gaudi-head-noavx2#159
• [2017-10-31 00:06] Validation started with lhcb-gaudi-head-noavx#178
• [2017-10-31 00:06] Validation started with lhcb-lcg-dev4#328
• [2017-10-31 11:48] Validation started with lhcb-gaudi-head#1642
• [2017-10-31 12:21] Validation started with lhcb-gaudi-merge#267
• [2017-11-01 00:06] Validation started with lhcb-head#1645
• [2017-11-01 00:06] Validation started with lhcb-lcg-dev3#329
• [2017-11-01 00:06] Validation started with lhcb-clang-test#754
• [2017-11-01 00:06] Validation started with lhcb-gaudi-head-noavx2#160
• [2017-11-01 00:06] Validation started with lhcb-gaudi-head-noavx#179
• [2017-11-01 00:06] Validation started with lhcb-lcg-dev4#329
• [2017-11-01 00:06] Validation started with lhcb-gaudi-head#1643
• [2017-11-01 00:34] Validation started with lhcb-gaudi-head-noavx#179
• [2017-11-01 00:37] Validation started with lhcb-head#1645
• [2017-11-01 00:37] Validation started with lhcb-clang-test#754
• [2017-11-01 00:55] Validation started with lhcb-gaudi-head-noavx#179
• [2017-11-01 01:06] Validation started with lhcb-head#1645
• [2017-11-01 01:07] Validation started with lhcb-clang-test#754
• [2017-11-01 07:28] Validation started with lhcb-head#1645
• [2017-11-01 07:28] Validation started with lhcb-clang-test#754
• [2017-11-01 07:32] Validation started with lhcb-gaudi-head#1643
• [2017-11-01 07:53] Validation started with lhcb-gaudi-head#1643
• [2017-11-01 09:49] Validation started with lhcb-head#1645
• [2017-11-01 09:50] Validation started with lhcb-gaudi-head-noavx2#160
• [2017-11-01 09:57] Validation started with lhcb-gaudi-head#1643
• [2017-11-01 09:57] Validation started with lhcb-gaudi-head-noavx#179
• [2017-11-01 09:57] Validation started with lhcb-gaudi-head-noavx2#160
• [2017-11-01 09:59] Validation started with lhcb-head#1645
• [2017-11-01 10:02] Validation started with lhcb-clang-test#754
• [2017-11-01 14:29] Validation started with lhcb-gaudi-merge#268

merged

mentioned in commit 6e148e58

mentioned in commit 9721193a

mentioned in merge request !930 (merged)

mentioned in commit 204820d3

mentioned in merge request !931 (merged)

mentioned in commit c2a3b469

mentioned in commit acae3a05