SRE-2509 common: do not skip tests on empty commits #6821

Job	Run time
Build DAOS (alma.8)	40m 7s
Build DAOS (alma.9)	39m 55s
Build DAOS (rocky.8)	39m 31s
Build DAOS (ubuntu)	10m 4s
Build DAOS (ARM64) (ubuntu, clang)	1m 9s
Build DAOS (ARM64) (alma.8, clang)	1m 14s
Build DAOS (ARM64) (leap.15, clang)	1m 24s
Create Docker images (ubuntu)	9m 4s
Create Docker images (rocky)	9m 53s
Create Docker images (fedora)	10m 17s
Create Docker images (leap.15)	12m 10s
Run DAOS/NLT tests (ubuntu)	24m 17s
Build DAOS in image (ubuntu, clang)	21m 16s
Build DAOS in image (ubuntu, gcc)	22m 50s
Build DAOS in image (rocky, clang)	23m 36s
Build DAOS in image (rocky, gcc)	24m 49s
Build DAOS in image (fedora, clang)	23m 6s
Build DAOS in image (fedora, gcc)	24m 16s
Build DAOS in image (leap.15, clang)	23m 25s
Build DAOS in image (leap.15, gcc)	24m 18s
	6h 26m 41s

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