Fixes #4287 - Join directly to template_combinations when resolving templates
(cherry picked from commit 1443ec139bdb0a31faeef80f6c177d4f30fa4bdb)
fixes #3752 - move data population from migrations into seed script
v2 api for configuration_templates and template_combinations
Added additional counter-tests to config templates
Fixes #592 - Adding tests for provisioning template selection based on Host
Fixes #378 - Adds support for multiple configuration templates
Configuration templates (Kickstart, preseed, syslinux, gpxe etc) can nowbe saved in the database directly.
Each template is associated with valid operating systems (unless if its asnippet which can rendered via all other templates) and a possible...