[WIP] Create shared service plan when keycloak is provisioned

[JameelB]

Description

Create a shared service plan once a Keycloak instance has finished provisioning.

Progress

• [x] When Keycloak has been marked as provisioned, create a shared service plan
• [x] Once a shared service plan has been created, mark the Keycloak resource's status as complete.

Additional Notes

Related JIRA - https://issues.jboss.org/browse/AEROGEAR-7684

Verification Steps

1. Run the managed-service-broker and the Keycloak operator in the same namespace.
2. Create a shared service custom resource
3. Verify that the SharedService resource is marked as provisioning
4. Verify that a SharedServicePlan resource is created once a Keycloak service instance has finished provisioning.
5. Verify that the SharedService and Keycloak resource is marked as complete once a SharedServicePlan resource is created.
6. Verify that the managed-service-broker picks up this SharedServicePlan
7. Verify that the plan is shown in the service catalog.