Rename Telecom Call Ids to include attempt

Telecom Call Ids will now append an attempt id (in the form of an
integer) that will be used by the CreateConnetionProcessor to name the
Telecom Call Ids that are used during the creation of a Connection to
the ConnectionService. This allows us to better identify which
Connection is calling back to Telecom to update status, disconnect,
etc. Previously, all of the attempted Connections in
CreateConnectionProcessor would be given the same name, which could lead
to multiple Connections trying to manage the same Call object in
Telecom.

Also, a supporting tests were added and a few Unit Tests were fixed.

Bug: 28799824
Change-Id: I7e23497ab671712bc8d3cc9542537ae1c4829afc