Fixes after introduction of Python 3 support

This MR fixes a few issues in !875 (merged)

• better handling of unicodes in GaudiTesting
• fixed produce_consume test stability across versions of Python (incidentally improving readability of the changes introduced in !951 (merged))
• fix caching of ccache output for Python 3 based build

changed milestone to %v32r2

added bug fix label

@rmatev, can you have a look, please?

• [2019-09-23 13:12] Validation started with lhcb-gaudi-merge#825
• [2019-09-23 16:47] Validation started with lhcb-dd4hep#327
• [2019-09-24 00:04] Validation started with lhcb-lcg-dev3#1030
• [2019-09-24 00:04] Validation started with lhcb-lcg-dev4#1040
• [2019-09-24 00:04] Validation started with lhcb-sanitizers#380
• [2019-09-24 00:04] Validation started with lhcb-test-throughput2#161
• [2019-09-24 00:08] Validation started with lhcb-run2-patches-dev4#88
• [2019-09-24 00:25] Validation started with lhcb-lcg-dev4#1040
• [2019-09-24 00:26] Validation started with lhcb-lcg-dev3#1030
• [2019-09-24 00:28] Validation started with lhcb-gaudi-head#2396
• [2019-09-24 01:23] Validation started with lhcb-gaudi-head-py3#185
• [2019-09-24 01:43] Validation started with lhcb-tdr-test#683
• [2019-09-24 03:12] Validation started with lhcb-dd4hep#328
• [2019-09-24 11:45] Validation started with lhcb-gaudi-head-py3#186
• [2019-09-24 11:49] Validation started with lhcb-gaudi-head-py3#187
• [2019-09-24 15:35] Validation started with lhcb-gaudi-head-py3#188
• [2019-09-25 00:02] Validation started with lhcb-gaudi-head-py3#189
• [2019-09-25 00:03] Validation started with lhcb-lcg-dev3#1031
• [2019-09-25 00:03] Validation started with lhcb-lcg-dev4#1041
• [2019-09-25 00:04] Validation started with lhcb-sanitizers#381
• [2019-09-25 00:04] Validation started with lhcb-test-throughput2#162
• [2019-09-25 00:08] Validation started with lhcb-run2-patches-dev4#89
• [2019-09-25 00:09] Validation started with lhcb-dd4hep#329
• [2019-09-25 00:10] Validation started with lhcb-gaudi-head#2397
• [2019-09-25 00:10] Validation started with lhcb-tdr-test#684

added 1 commit

• 79d63eb5 - Make produce_consume test stable across version of Python

Compare with previous version

added 1 commit

• 29c9b151 - Improve test of Functional input/output types in Python

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added 1 commit

• 097d7c5d - Fix ccache caching for build:gcc8:opt:python3

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changed title from Better handling of unicodes in GaudiTesting to Fixes after introduction of Python 3 support

changed the description

approved this merge request

merged

mentioned in commit 66b55aa1

mentioned in issue #88 (closed)