Remove bind with pfdns
Rewrite Oauth support (based on ipset session)
Have to include a domain list for pfdns and oauth2

Conflicts:

	lib/pf/config.pm
	lib/pf/services.pm
Added permit domains list for Oauth2 in pf.conf
Update Administration Guide
Fix iptables for Oauth2 and use the new PacketFence 4 configuration var
Remove readOAuthFile check
Fix test
Added domains in form for OAuth2
Removed error with ipset insertion, trace requested domain
Syntax error in pfdns
Added cache for pfdns