Make cuda version check dynamic #986

Job	Run time
eessi_container_script (container)	5m 53s
eessi_container_script (run)	4m 3s
eessi_container_script (resume)	2m 56s
eessi_container_script (no_cvmfs_mounts)	3m 44s
eessi_container_script (listrepos_default)	2m 7s
eessi_container_script (shell)	3m 56s
eessi_container_script (help)	3m 25s
eessi_container_script (exec)	4m 19s
eessi_container_script (listrepos_custom)	2m 18s
eessi_container_script (unionfs)	3m 11s
	35m 52s

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