Add ATLAS_CHECK_THREAD_SAFETY to TRT_G4_SD and TRT_TR_Process

• In order to confirm and keep thread safety of TRT_G4_SD and TRT_TR_Process packages, ATLAS_CHECK_THREAD_SAFETY files were added.
• Some changes were necessary
  • ATLAS_THREAD_SAFE of #include "CxxUtils/checker_macros.h" was added to mutable Athena::MsgStreamMember m_msg;
  • const keyword was added to return type of const method
  • Remove const_cast
• Results should not be changed.
• No JIRA ticket

This merge request affects 2 packages:

• InnerDetector/InDetG4/TRT_G4_SD
• InnerDetector/InDetSimUtils/TRT_TR_Process

Adding @cgrefe ,@calfayan ,@sroe ,@goetz as watchers

added InnerDetector Simulation master review-pending-level-1 labels

CI Result SUCCESS (hash 9a8d5f9c)

	Athena	AthSimulation	AnalysisBase	AthGeneration
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 15673]

changed the description

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 69b9a8a3

added sweep:ignore label