Adding cert-manager test #1716

Job	Run time
lint (1.21.x, ubuntu-latest)	4m 17s
govet (1.21.x, ubuntu-latest)	2m 50s
Shellcheck (1.21.x)	22s
Check for vulnerable dependencies (1.21.x)	1m 5s
gotest (1.21.x, ubuntu-latest)	3m 51s
operator (1.21.x, ubuntu-latest)	4m 59s
test-tenant-upgrade (1.21.x, ubuntu-latest)	4m 51s
test-tenant (1.21.x, ubuntu-latest)	3m 14s
helm-floor (1.21.x, ubuntu-latest)	2m 35s
helm (1.21.x, ubuntu-latest)	2m 53s
test-cert-manager (1.21.x, ubuntu-latest)	2m 19s
test-kes (1.21.x, ubuntu-latest)	4m 57s
test-policy-binding (1.21.x, ubuntu-latest)	9m 10s
	47m 23s

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