Automatic merge from submit-queue (batch tested with PRs 47850, 47835, 46197, 47250, 48284)

Securing the cluster created by Juju

**What this PR does / why we need it**: This PR secures the deployments done with Juju master. Works around certain security issues inherent to kubernetes (see for example dashboard access)

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```
Securing Juju kubernetes dashboard
```