Fixes #18213 - Added webpack folder to string extraction

Refs #18143 - extend snippet_if_exists too

Fixes #18143 - enable variables for snippets (#4205)

Fixes #17330 - skip admin email if it's unknown

When admin user is being seeded the Setting might not exist at that
moment. We can't just create it with value, since the setting would
be invalid because of other attributes. Therefore we split settings
creation from the setting list so we could create it from seed too....

Fixes #16740 - Access host params through macro

Fixes #17837 - Fix hosts:scan_out_of_sync task

The task relies on Ping, which was removed since Ruby 1.9. I've moved it
to rely on net-ping instead. Notice the ping now relies on the 'ping'
binary being in the foreman user path for this to work with foreman-rake

fixes #8290 - remove foreman_url redundancy

Fixes #17874 - Extract contains_erb? from lookup key

Fixes #10957 - Correctly handle to_gb when no unit given

Fixes #17561 - Allow Dynamic keyword in autoyast files