DAOS-16298 test: improve get_clush_command timeout (#15113) #6830

Job	Run time
Build DAOS (ARM64) (ubuntu, clang)	38m 53s
Build DAOS (alma.8)	38m 40s
Build DAOS (ARM64) (alma.8, clang)	39m 33s
Build DAOS (alma.9)	40m 45s
Build DAOS (ARM64) (leap.15, clang)	37m 2s
Build DAOS (rocky.8)	38m 50s
Create Docker images (ubuntu)	9m 1s
Create Docker images (rocky)	9m 11s
Build DAOS (ubuntu)	9m 29s
Create Docker images (fedora)	10m 32s
Create Docker images (leap.15)	13m 11s
Run DAOS/NLT tests (ubuntu)	25m 36s
Build DAOS in image (ubuntu, clang)	21m 17s
Build DAOS in image (ubuntu, gcc)	22m 43s
Build DAOS in image (rocky, clang)	24m 17s
Build DAOS in image (rocky, gcc)	24m 22s
Build DAOS in image (fedora, clang)	22m 32s
Build DAOS in image (fedora, gcc)	24m 3s
Build DAOS in image (leap.15, clang)	23m 54s
Build DAOS in image (leap.15, gcc)	24m 51s
	8h 18m 42s

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