fix: update MaaS API group constants and align modelRef with CRD (#1154)

* fix: align MaaS modelRef with CRD (drop apiGroup/group) and updated constants

* apply formatting fixes from pre-commit

Author: SB159

tests/model_serving/model_server/maas_billing/maas_subscription/conftest.py

@@ -97,13 +97,11 @@ def maas_model_tinyllama_free(
             "name": maas_inference_service_tinyllama_free.name,
             "namespace": maas_inference_service_tinyllama_free.namespace,
             "kind": "LLMInferenceService",
-            "apiGroup": "serving.kserve.io",
-            "group": "serving.kserve.io",
         },
         teardown=True,
         wait_for_resource=True,
-    ) as m:
-        yield m
+    ) as maas_model:
+        yield maas_model
 
 
 @pytest.fixture(scope="class")
@@ -121,13 +119,11 @@ def maas_model_tinyllama_premium(
             "name": maas_inference_service_tinyllama_premium.name,
             "namespace": maas_inference_service_tinyllama_premium.namespace,
             "kind": "LLMInferenceService",
-            "apiGroup": "serving.kserve.io",
-            "group": "serving.kserve.io",
         },
         teardown=True,
         wait_for_resource=True,
-    ) as m:
-        yield m
+    ) as maas_model:
+        yield maas_model
 
 
 @pytest.fixture(scope="class")

utilities/resources/maa_s_auth_policy.py

@@ -6,13 +6,15 @@
 from ocp_resources.exceptions import MissingRequiredArgumentError
 from ocp_resources.resource import NamespacedResource
 
+from utilities.constants import ApiGroups
+
 
 class MaaSAuthPolicy(NamespacedResource):
     """
     MaaSAuthPolicy is the Schema for the maasauthpolicies API
     """
 
-    api_group: str = "maas.opendatahub.io"
+    api_group: str = ApiGroups.MAAS_IO
 
     def __init__(
         self,

utilities/resources/maa_s_model.py

@@ -6,13 +6,15 @@
 from ocp_resources.exceptions import MissingRequiredArgumentError
 from ocp_resources.resource import NamespacedResource
 
+from utilities.constants import ApiGroups
+
 
 class MaaSModel(NamespacedResource):
     """
     MaaSModel is the Schema for the maasmodels API
     """
 
-    api_group: str = "maas.opendatahub.io"
+    api_group: str = ApiGroups.MAAS_IO
 
     def __init__(
         self,

utilities/resources/maa_s_subscription.py

@@ -6,13 +6,15 @@
 from ocp_resources.exceptions import MissingRequiredArgumentError
 from ocp_resources.resource import NamespacedResource
 
+from utilities.constants import ApiGroups
+
 
 class MaaSSubscription(NamespacedResource):
     """
     MaaSSubscription is the Schema for the maassubscriptions API
     """
 
-    api_group: str = "maas.opendatahub.io"
+    api_group: str = ApiGroups.MAAS_IO
 
     def __init__(
         self,