fixes #11175 - [API] Add taxonomies to ptables, display ptables in taxonomies

(cherry picked from commit d1e6d79eb8c469ecf3c66fc15ba5fe8c1333836c)

fixes #10933 - in api/v1 templates should be name as config_templates

(cherry picked from commit c4fb1c1b90f696011bfdd938ab9f9cea59aa2ef6)

fixes #10861 - Remove unused columns from the hosts table

• Serial - Never really used, probably can be refactored as kernel
  parameters.
• last_freshcheck, source_file_id - left overs from puppet old store
  configs compatibility that we no longer use, I assume no one is using...

Fixes #10854 - config_templates missing from show in taxonomies and os

Fixes #7096 - Adds STI to templates

This commit converts Ptables to be just another type of Template so it
gets the same features as ConfigTemplate. ConfigTemplate was renamed to
ProvisioningTemplate to reflect UI and the name under it's commonly known.

Fixes #9594 - adds admin field to the hostgroup rabl

fixes #10509 - add toggle for LDAP usergroup updating

Fixes #10002 - Add attribute ancestry to taxonomies API v2

fixes #9856 - include locations and organizations in user output

Fixes #9827 - compute resource info in API doesn't send provider type