Fixes #8267 - accept template_url in call to foreman from proxy
Fixes #8421 - Host group search by OS attributes

Host group search by operating system only searches by name. Users
should be able to search by title and other fields, same as in the Hosts
index.
Fixes #8433 - Fix type transformation for all ENC-able NICs
templates - sync from community-templates
fixes #8471 - adds a number field input support

* change subnet vlan to number field
* change ldap port to number field
Fixes #8536 - can update and delete media with dot in name
Fixes #8284 - missing params in OS api docs
fixes #8348 - expose user variable to templates in group mail
fixes #8221 - search for subnet with taxonomy scope
fixes #8526 - file uploads are now possible via two_pane.

NOTE this will probably only work with HTML5 based browsers.
fixes #8513 - removing n+1 query from images#index
Fixes #8546 - Namespace interfaces and subnets to avoid a facts clash
Fixes #7456 - Extract primary interface from host

All host must have at least one primary interface and one provision (can
be the same interface). Primary interface gives host a name so even
unamanaged host have primary interface (we skip validations of other
attributes for unamanged hosts though).

Host still have name attribute which is a cache of primary interface name.
Therefore we can use the host name in SQL queries, as a friendly_id etc.
Refs #7456 - UI changes for extraction

- realm moved to the primary tab
- fqdn in nics table
- flags in nics table
- checkboxes for provision and primary flags
- modal resize fix
- original fields for primary NIC removed
- skipping validation for new resources
- warnings before switching flags and table update
- host name and primary interface name connected
- host domain name in the page title
- nics on host show page
- clearing modal window on cancel
- fixed domain validation in NIC::Base
- ip suggestion for all interfaces
- flags switchable from the overview table
- use icons instead of text for primary/provision on NICs overview tab
- attempt to fix sending NIC template
- fix fqdn algorithm
- ip addres in the overview table
- fix for class name collision
- better behavior of host name <-> primary name sync
- fix for subnet combobox values
- fix for modal poping up on form submission
Refs #7456 - Connect Nic objects with VM nics in compute_attrs
Refs #7456 - Fix rubocop warnings and add more tests