Realm tests cannot use fake capsule/proxy without realm feature

[san7ket]

Relam tests are creating fake proxy and then CRUD Relam opertaions are performed this fails as the created proxy doesn't have relam feature on it

• tests.foreman.cli.test_realm.RealmTestCase.test_positive_delete_by_name

hammer -v -u admin -p changeme --output=csv realm create --realm-type="Active Directory" --name="KVu5LA" --realm-proxy-id="8"
<<< stderr
422 Unprocessable Entity
Realm Capsule does not have the Realm feature
E CLIFactoryError: Failed to create Realm with data:
Needs https://github.com/SatelliteQE/automation-tools/blob/master/automation_tools/__init__.py#L1409
and https://github.com/SatelliteQE/automation-tools/blob/master/automation_tools/__init__.py#L1555

[san7ket]

@sghai I would prefer to update the images Itself , rather than running the task to configure relam for every build. This way it will add a feature on the box for upgrade testing and will stasify having relam feature to run the related tests