MAP Client close connection on MNS disconnect

If the MNS connection is terminated from the client side disconnect the
corresponding MAS client.

Bug: 129908795
Test: disconnect the MAP connection from the MAS server (MNS client)
Change-Id: I39b524b2222d47a553eeaa4b9781f3200443cf8e
(cherry picked from commit ec407574)

Merged-In: I39b524b2222d47a553eeaa4b9781f3200443cf8e
Change-Id: I71426bef61234d1f1c61dfe94f23c266ea8e8a34