Deprecate file injection

This microversion makes the following changes:

1. Deprecates personality files from POST /servers and the rebuild
   server action APIs.
2. Adds the ability to pass new user_data to the rebuild server
   action API.
3. Personality / file injection related limits and quota resources
   are removed from the limits, os-quota-sets and os-quota-class-sets
   APIs.

Implements blueprint deprecate-file-injection

Change-Id: Ia89eeb6725459c35369e8f790f68ad9180bd3aba

doc/api_samples/versions/v21-version-get-resp.json

@@ -19,7 +19,7 @@
             }
         ],
         "status": "CURRENT",
-        "version": "2.56",
+        "version": "2.57",
         "min_version": "2.1",
         "updated": "2013-07-23T11:33:21Z"
     }