Added OpenShift specific permissions to set custom host for route

[xt99]

Description

When using custom host for Grafana's ingress at OpenShift, Grafana provisioning is failing with insufficient permissions error:

apiVersion: integreatly.org/v1alpha1
kind: Grafana
metadata:
  name: grafana
spec:
  ingress:
    enabled: true
    hostname: grafana.apps.openshift-cluster.com  # <-- custom host
  ...
status:
  message: >-
    Route.route.openshift.io "grafana-route" is invalid: spec.host: Forbidden:
    you do not have permission to set the host field of the route
  phase: failing

To allow Grafana's controller to edit custom host in OpenShift's routes, it should have access to routes/custom-host resource.

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist

• This change requires a documentation update
• I have added tests that prove my fix is effective or that my feature works
• I have added a test case that will be used to verify my changes
• Verified independently on a cluster by reviewer

Verification steps

1. Install Grafana Operator from OpenShift's Operator Hub (v4.1.0 at the moment)
2. Create Grafana CR with custom spec.ingress.hostname
3. Grafana instance will not be created because of insufficient permissions

[NissesSenap]

Thanks for the PR @xt99 , the CI while fail though. Please run make test and it run a bunch of scripts and update a bunch of yaml files for you.
Commit them all and it should pass :)
Note that we are currently building the operator using golang 1.16, if you are using 1.17 locally you will get a question about adding: +//go:build !ignore_autogenerated to api/integreatly/v1alpha1/zz_generated.deepcopy.go, don't add this change it will make the CI fail.

We should upgrade the go version some day soon so people don't have to think about this.

[xt99]

Thanks, @NissesSenap! I've added missed YAMLs and tests are passing locally via make test

[hubeadmin]

Looks good to me, thanks for contributing!