Automatic merge from submit-queue (batch tested with PRs 61402, 61143, 61427, 60592). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Changing admission controller settings

**What this PR does / why we need it**:
By default, the admission controller settings in a CDK cluster didn't match the set recommended here:
https://kubernetes.io/docs/admin/admission-controllers/#is-there-a-recommended-set-of-admission-controllers-to-use

Now they do.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
https://github.com/juju-solutions/bundle-canonical-kubernetes/issues/517
**Special notes for your reviewer**:

**Release note**:
```release-note
Updated admission controller settings for Juju deployed Kubernetes clusters
```