Fixes #2267 - general rebuild of TFTP, DNS, DHCP

Fixes #3650, #11600 - Compute Resource availability_zones, flavors, security_groups API v2 endpoints

refs #11738 - fix incorrect capitalisation and host group wording

fixes #11738 - add missing punctuation to provisioning template view

fixes #9108 - parent parameters are now overrideable

Fixes #11683 - Fixed Hostgroup#new parameters spinner when Lifecycle selected

fixes #3145 - host with a lot of parameters quicker

Fixes #11693 - removed 'destroy' for smart class parameter from API controllers

Fixes #10782 - global host status

• OK
• WARN
• ERROR

Plugins can add their own substatuses. These are automatically...

Fixes #11426 - remove puppet class paremeters no longer possible during edit in UI