Handle voicemail: -> tel: translation in Telephony (was in Telecomm)

TelephonyConnectionService should determine the correct number to call
for voicemail handles. Originally Telecomm (NewOutgoingCallBroadcaster)
handled this, but Telecomm is blind to the proper subscription to use.

Bug: 17317190
Change-Id: I1e9f97fc5176c7e3158eaf0867a137aced58121d
1 file changed