Always ensure application-manager ManagedServiceAccount exists

[xiangjingli]

• I have taken backward compatibility into consideration.

https://redhat.atlassian.net/browse/ACM-31416

[openshift-ci]

@xiangjingli: The following test 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/sonarcloud	514b31a	link	true	/test sonarcloud

Full PR test history. Your PR dashboard.

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[mikeshng]

/approve

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mikeshng, xiangjingli

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• OWNERS [mikeshng,xiangjingli]

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[xiangjingli]

/cherry-pick release-2.16

[openshift-cherrypick-robot]

@xiangjingli: new pull request created: #1518

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In response to this:

/cherry-pick release-2.16

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.