TriggerJobOpts: Update TrigConfMeta function to better handle list of an empty string

As stated in the title, TrigConfMeta function is updated to better handle list of an empty string. Relates to ATLASDQ-853.

\cc @rbielski @tamartin

This merge request affects 1 package:

• Trigger/TriggerCommon/TriggerJobOpts

This merge request affects 1 file:

• Trigger/TriggerCommon/TriggerJobOpts/python/TriggerConfigFlags.py

added Trigger master review-pending-level-1 labels

Thanks @tvarol

CI Result SUCCESS (hash ec8847e0)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
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
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 35143]

Hi! Changes look good from L1 side and CI ran fine. Approving...

Cheers, Francisco (L1)

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

merged

mentioned in commit 47b23c69

added sweep:ignore label