SCM Inventory model, view, and task system changes

Inventory source file-type combined with a linked project
will allow the inventory source to be updated when the
project is updated. The inventory update runs in the
post-run hook of the project update.

awx/main/tests/functional/conftest.py

@@ -133,7 +133,9 @@ def project(instance, organization):
     prj = Project.objects.create(name="test-proj",
                                  description="test-proj-desc",
                                  organization=organization,
-                                 playbook_files=['helloworld.yml', 'alt-helloworld.yml']
+                                 playbook_files=['helloworld.yml', 'alt-helloworld.yml'],
+                                 local_path='_92__test_proj',
+                                 scm_revision='1234567890123456789012345678901234567890'
                                  )
     return prj
 
@@ -208,6 +210,15 @@ def inventory(organization):
     return organization.inventories.create(name="test-inv")
 
 
+@pytest.fixture
+def scm_inventory_source(inventory, project):
+    return InventorySource.objects.create(
+        name="test-scm-inv",
+        scm_project=project,
+        source_path='inventory_file',
+        inventory=inventory)
+
+
 @pytest.fixture
 def inventory_factory(organization):
     def factory(name, org=organization):