Fix missing Property name in error messages

Content of the MR:(GaudiConfig2 only)

• drop some Python 2 compatibility hacks
• fix a minor inconsistency in the exception reported when setting string properties from wrong types
• migrated the tests of GaudiConfig2 from nosetests to pytest to use gaudi_add_pytest (!1440 (merged))
• add a test to expose issue #265 (closed)
• fix for #265 (closed)

Closes #265 (closed)

changed milestone to %v36r14

added bug configuration labels

changed the description

mentioned in issue #265 (closed)

changed milestone to %v37r0

changed the description

added 60 commits

• 83e3201a...1338c8f2 - 56 commits from branch gaudi:master
• 26958ad5 - GaudiConfig2: remove hacks for Python < 3.7
• 0e96fb2e - GaudiConfig2: assign non-string to string property is TypeError (and not ValueError)
• cbd838c6 - GaudiConfig2: converted tests to pytest
• ae35fe76 - Add test to expose #265 (closed)

Compare with previous version

added 1 commit

• e256ff86 - Fix report of property name in exceptions for sequence and mapping semantics

Compare with previous version

added lhcb-gaudi-head label

changed the description

assigned to @clemenci

• [2023-09-13 00:04] Validation started with lhcb-gaudi-head#3682
• [2023-09-13 00:26] Validation started with lhcb-run2-gaudi-head#611
• [2023-09-13 00:33] Validation started with lhcb-sim10-gaudi-head#378

marked this merge request as ready

changed title from Draft: Resolve "Property name missing in error message" to Fix missing Property name in error messages

mentioned in issue #274 (closed)

resolved all threads

mentioned in issue #275 (closed)

@fwinkl, can you confirm I didn't break anything with this?