Adding cert-manager test #1720

Job	Run time
lint (1.21.x, ubuntu-latest)	4m 50s
govet (1.21.x, ubuntu-latest)	2m 52s
Shellcheck (1.21.x)	18s
Check for vulnerable dependencies (1.21.x)	54s
operator (1.21.x, ubuntu-latest)	5m 5s
gotest (1.21.x, ubuntu-latest)	4m 5s
test-cert-manager (1.21.x, ubuntu-latest)	3m 33s
helm-floor (1.21.x, ubuntu-latest)	3m 0s
test-kes (1.21.x, ubuntu-latest)	5m 1s
helm (1.21.x, ubuntu-latest)	2m 52s
test-policy-binding (1.21.x, ubuntu-latest)	11m 21s
test-tenant (1.21.x, ubuntu-latest)	3m 55s
test-tenant-upgrade (1.21.x, ubuntu-latest)	4m 49s
	52m 35s

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