Implement item copy feature

See acceptance doc for implement details.

Signed-off-by: Aaron Tan <jangsutsr@gmail.com>

awx/main/tests/functional/conftest.py

@@ -33,7 +33,8 @@ from awx.main.models.inventory import (
     Group,
     Inventory,
     InventoryUpdate,
-    InventorySource
+    InventorySource,
+    CustomInventoryScript
 )
 from awx.main.models.organization import (
     Organization,
@@ -489,6 +490,13 @@ def inventory_update(inventory_source):
     return InventoryUpdate.objects.create(inventory_source=inventory_source)
 
 
+@pytest.fixture
+def inventory_script(organization):
+    return CustomInventoryScript.objects.create(name='test inv script',
+                                                organization=organization,
+                                                script='#!/usr/bin/python')
+
+
 @pytest.fixture
 def host(group, inventory):
     return group.hosts.create(name='single-host', inventory=inventory)