[app-mgmt-test] Update srv1 and srv2 in preparation for new test suites

srv1:
    - restarts as soon as it receives a connection (i.e. Doesn't accept it).
    - Uses a new port name RESTART_PORT "com.android.trusty.appmgmt.restartsrv

srv2:
    - Renamed CTRL_PORT to com.android.trusty.appmgmt.portstartsrv.ctrl
    - Renamed START_PORT to com.android.trusty.appmgmt.portstartsrv
    - Added a new port com.android.trusty.appmgmt.portstartsrv.shutdown as
      SHUTDOWN_PORT. The server exits upon receiving connections on this port
    - Handles multiple commands per connection
    - Removed DELAYED_EXIT cmd
    - Added OPEN_PORT cmd

Both servers now use libtipc instead of their own send/recv helpers and
the code in /common is no longer needed.

Both servers now accept TA connections

All port definitions are now in app_mgmt_test.h

Bug: 120794182
Change-Id: I8c24226c019f3d8f95dc1b7d7762b8558bb1967b
9 files changed