Fixes #3650, #11600 - Compute Resource availability_zones, flavors, security_groups API v2 endpoints
Fixes #10356 - changed the POST/PUT RABL template to be the same as the GET template
HTTP response code standardized to 201 on create.
Refs #3809 - Remove cops for empty lines
Fixes #5139 - leftovers subscribe_to_all_hostgroups
Remove user_xxx unnecessary tables and notices
Update subhostgroups removed
Fixes for migration of foreign keys
Remove users from compute_resource fixture
Remove table notices after fk are removed for pg/mysql
fixes #5896 - Set Compute Resource's 'Console passwords' option in API
Fixes #6756 - exposes vmware resource pools and folders through the API
Fixes #6608 - expose disk usage info through available_storage_domains API
fixes #4155 - enable host/CR (dis)association via api
fixes #4581 Implement available_networks API for VMware
fixes #812 - new permissions model, user group role and nest support, role filters for better granularity
fixes #4222 Add capability to compute resource API to retrieve cluster,network,storage info on oVirt
fixes #3011 - default root node name for api collections json response to :results but make it configurable
fixes #3017 - split APIv2 controllers from v1 parents
fixes #3101 - list available images for CRs, add iam_role field to images API
