ssh.sh: sleep to infinity and beyond #11601

Job	Run time
test_suite_pr	0s
test_suite_tag	0s
test_suite_master / Smoke tests (ext4, true)	37m 54s
test_suite_master / Smoke tests (ext4, false)	38m 52s
test_suite_master / Smoke tests (zfs, true)	52m 55s
test_suite_master / Smoke tests (zfs, false)	44m 31s
test_suite_master / LPC LOC test suite	1h 36m 26s
test_suite_master / Storage test suite (ext4)	26m 37s
test_suite_master / Storage test suite (zfs)	1h 17m 13s
test_suite_master / Networking test suite	19m 54s
test_suite_master / User apps test suite	32m 13s
test_suite_master / EVE upgrade test suite (ext4)	54m 43s
test_suite_master / EVE upgrade test suite (zfs)	50m 49s
	8h 52m 7s

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