Continue updating deployment manifests when uninstalling

[mprahl]

This allows an addon to update its deployment manifests while the predelete hook is running. This is useful when telling the addon to enter uninstall mode.

Additionally, if there is a bug in the uninstall and it keeps the uninstall from succeeding, we need to allow container image updates to move forward in the event the update fixes the problem.

Relates: https://issues.redhat.com/browse/ACM-8947

[mprahl]

/cc @JustinKuli

[mprahl]

/hold if you agree with the approach, I'll work to get the tests working

[zhiweiyin318]

/LGTM the manifestworks should not be re-created when cluster/addon is deleting, it is ok for me in this pre-delete case. cc @qiujian16 @zhujian7

[mprahl]

/unhold this is ready for review with the tests fixed

[mprahl]

/cc @zhujian7

[zhujian7]

/lgtm

[mprahl]

@zhiweiyin318 could you please take another look?

[zhiweiyin318]

/LGTM need approve from @qiujian16

[qiujian16]

/approve

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mprahl, qiujian16

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[mprahl]

/unhold