uri: don't strip 'ring:'
uri: don't strip 'ring:'

Stripping 'ring:' off of URIs caused ContactMethods to be created
with just a Ring ID as the number and eventually contacts in
gnome-contacts to be created with just the Ring ID as the phone number
instead of ring:<ringid>. The 'ring:' prefix is important information
as other protocols could have a similar hash as the phone number.

Tuleap: #648
Change-Id: I031129b8ac0f0af59656b5158e1b30695578b7fe

savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc