Cleans up feature set for 3.3

This removes the experimental features that were not selected
for 3.3 release.

* Removes dpath requirement
* Removes generated action_plugins
* Removes network UI v1 api
* Removes unused network management commands
* Removes network UI CLI client
* Removes templates
* Removes unused DataBinding models
* Removes obsolete test
* Removes unused admin and tests
* Removes experimental UndoPersistence, RedoPersistence, and auto-layout functions
* Removes API endpoints for network visualization
* Removes unused consumer routes
* Removes group, site, and rack features for 3.3
* Removes unused tables controller
* Removes undo/redo
* Removes group code and scale checks

requirements/requirements.in

@@ -60,4 +60,3 @@ uwsgitop==0.10.0
 xmltodict==0.11.0
 pip==9.0.1
 setuptools==36.0.1
-dpath==1.4.0

requirements/requirements.txt

@@ -106,9 +106,7 @@ constantly==15.1.0        # via twisted
 cryptography==2.1.4       # via adal, azure-cosmosdb-table, azure-storage-common, pyopenssl, requests, secretstorage
 daphne==1.3.0
 decorator==4.2.1
-dpath==1.4.0
 debtcollector==1.15.0     # via oslo.config, oslo.utils, python-designateclient, python-keystoneclient, python-neutronclient
-decorator==4.0.11         # via shade
 defusedxml==0.4.1         # via python-saml
 deprecation==2.0          # via openstacksdk
 django-auth-ldap==1.2.8