- Dynamically driven by the "subcollections" exposed via OPTIONS /api/:collection
- supports queries and actions

  Queries:
  miq.vms.find(166).tags.collect(&:name)
  miq.vms.find(166).tags.select(:categorization).collect(&:categorization)

  Subcollection Actions:
  miq.vms.find(166).tags.assign(:name => "/managed/location/ny")
  miq.vms.find(166).tags.assign([{:name => "/managed/location/chicago"}, {:name => "/managed/cc/001"}])

  Subcollection resource actions:
  miq.vms.find(166).tags.find(32).unassign
  miq.vms.find(166).tags.where(:name => "/managed/location/*").collect(&:unassign)

Fixes: ManageIQ#31
Fixes: ManageIQ#32

- Moving action specific action methods for resources and subresources to seperate mixin.
- Moving action specific action methods for collections and subcollections to seperate mixin.
- Moving common queryable methods for collections and subcollections to a common QueryableMixin

- Updated options response fixture to include subcollections
- Added collection rspecs
- Added resource rspecs

- Add tests for subcollections

- Adding resource actions_vms.json
- Adding subcollection actions_vm_tags.json

- Adding tests for subresources

with PR# ManageIQ#77

moved to the common collection mixin

parameters_from_query_relation, filters_from_query_relation and order_parameters_from_query_relation
which really live in the mixins/queryable_mixin.rb

…ons.

need for the collection_action_mixin.rb