Further module conversion changes, unit test changes

Multiple module changes

Added on_change callback

Added head_endpoint

Added additional error returns

Respond with a try an ID message if multiple assets found by name via return_none_on_404 kwarg

Diferentiated between login and logout token errors

Added is_job_done method

awx_collection/test/awx/test_credential.py

@@ -63,9 +63,9 @@ def test_create_vault_credential(run_module, admin_user):
 
 
 @pytest.mark.django_db
-def test_create_custom_credential_type(run_module, admin_user):
+def test_create_custom_credential_type(run_converted_module, admin_user):
     # Example from docs
-    result = run_module('tower_credential_type', dict(
+    result = run_converted_module('tower_credential_type', dict(
         name='Nexus',
         description='Credentials type for Nexus',
         kind='cloud',
@@ -79,8 +79,7 @@ def test_create_custom_credential_type(run_module, admin_user):
     ct = CredentialType.objects.get(name='Nexus')
     result.pop('invocation')
     assert result == {
-        "credential_type": "Nexus",
-        "state": "present",
+        "name": "Nexus",
         "id": ct.pk,
         "changed": True
     }