Add debmon support

Signed-off-by: Nick Chappell <nick@intronic.org>
Refactor debmon repository feature

rename use_debmon to use_debmon_repo, merge debmon_repo class to install class

Signed-off-by: Nick Chappell <nick@intronic.org>
Refactor debmon support

Signed-off-by: Nick Chappell <nick@intronic.org>