Import order clean-up

Reorder imports by full module path

Change-Id: I50bc2a5ff6cea939049fed8066471b15e84adbe6

HACKING.rst

@@ -30,6 +30,19 @@ Imports
 -------
 - Do not make relative imports
 - Order your imports by the full module path
+
+Example::
+
+  The following imports,
+
+  from quantum.api import networks
+  from quantum import wsgi
+
+  are considered equivalent for ordering purposes to
+
+  import quantum.api.networks
+  import quantum.wsgi
+
 - Organize your imports according to the following template
 
 Example::