[test-operator][horizon] Fix Horizon CR name

This patch ensures that we are creating Horizon CR instance with name
set to a value that we later search for when requesting a status of
openshift jobs.

Previously we were creating Horizon CR with name horizontest name but
were querying jobs with name horizontest-tests [1].

[1] https://github.com/openstack-k8s-operators/ci-framework/blob/ad0110d522dac0a1f3637c4207c45ac36b827ef3/roles/test_operator/vars/main.yml#L20

roles/test_operator/defaults/main.yml

@@ -218,7 +218,7 @@ cifmw_test_operator_horizontest_config:
   apiVersion: test.openstack.org/v1beta1
   kind: HorizonTest
   metadata:
-    name: horizontest
+    name: "{{ cifmw_test_operator_horizontest_name }}"
     namespace: "{{ cifmw_test_operator_namespace }}"
   spec:
     storageClass: "{{ cifmw_test_operator_storage_class }}"