Add ATLAS_CHECK_THREAD_SAFETY to BLM_GeoModel package
- In order to confirm and keep thread safety of the BLM_GeoModel package, ATLAS_CHECK_THREAD_SAFETY file was added.
- static member variables had to be changed to static constexpr member variables.
- Results should not changed.
- RunTier0Tests.py was fine. RunTier0Tests.log
- No JIRA ticket