Allow using a custom secret name #2050

Job	Run time
govet (1.21.x, ubuntu-latest)	1m 46s
lint (1.21.x, ubuntu-latest)	2m 43s
Shellcheck (1.21.x)	20s
Check for vulnerable dependencies (1.21.x)	38s
operator (1.21.x, ubuntu-latest)	1m 31s
gotest (1.21.x, ubuntu-latest)	2m 1s
test-tenant (1.21.x, ubuntu-latest)	2m 51s
test-kes (1.21.x, ubuntu-latest)	4m 13s
test-cert-manager (1.21.x, ubuntu-latest)	3m 59s
helm (1.21.x, ubuntu-latest)	2m 25s
helm-floor (1.21.x, ubuntu-latest)	2m 28s
test-decommission (1.21.x, ubuntu-latest)	6m 33s
test-policy-binding (1.21.x, ubuntu-latest)	7m 19s
test-tenant-upgrade (1.21.x, ubuntu-latest)	3m 54s
	42m 41s

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