Remove ensureSecret and use one from lib-common

[mrkisaolamb]

Depends-on: openstack-k8s-operators/lib-common#507

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[openshift-ci]

@mrkisaolamb: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/functional	331502c	link	true	/test functional
ci/prow/precommit-check	331502c	link	true	/test precommit-check
ci/prow/placement-operator-build-deploy-kuttl	331502c	link	true	/test placement-operator-build-deploy-kuttl

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[openshift-merge-robot]

PR needs rebase.

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