Automatic merge from submit-queue (batch tested with PRs 49058, 49072, 49137, 49182, 49045)

Set default CIDR to /16 for Juju deployments

**What this PR does / why we need it**: Increase the number of IPs on a deployment

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes https://github.com/juju-solutions/bundle-canonical-kubernetes/issues/272

**Special notes for your reviewer**:

**Release note**:

```Set default CIDR to /16 for Juju deployments
```