Fixes #8499 - Link LICENSE from README
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