Retry sending hangup command on new connection after redial completes

When redial is in progress, we can not execute the hangup command.
In the event that the user tries to hangup while the redial is still
in progress, wait until the new connection is set up and then execute
the hangup on the new connection.

Bug: 195793731
Test: manual, atest TeleServiceTests
Change-Id: I97443c42029b297802971cf5404b571d54553628
2 files changed