test_operator: more allowed list for tempests (glance, swift)

Follow the estabilished pattern and add more tests groups
for two additional operators, at least to cover the basic
API testing.

roles/test_operator/files/list_allowed.yml

@@ -49,3 +49,13 @@ groups:
       - telemetry_tempest_plugin.scenario
     releases:
       - all
+  - name: glance-operator
+    tests:
+      - tempest.api.image..*
+    releases:
+      - all
+  - name: swift-operator
+    tests:
+      - tempest.api.object_storage..*
+    releases:
+      - all