add Zen5 support to archdetect #1237

Job	Run time
eessi_container_script (help)	33s
eessi_container_script (exec)	1m 40s
eessi_container_script (container)	1m 25s
eessi_container_script (listrepos_default)	33s
eessi_container_script (listrepos_custom)	35s
eessi_container_script (no_cvmfs_mounts)	1m 38s
eessi_container_script (resume)	1m 32s
eessi_container_script (shell)	1m 43s
eessi_container_script (run)	1m 24s
eessi_container_script (unionfs)	1m 41s
	12m 44s

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