session: gracefully stop on interrupts

Remove task cancellation on interrupts as it doesn't fit
our needs. Cancelling tasks only stops running coroutines, but the
application still halts without terminating test executables. Now,
we handle exceptions properly and stop the session gracefully.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>

Author: acerv

libkirk/main.py

@@ -382,6 +382,7 @@ async def session_run() -> None:
                 await monitor.stop()
 
     loop = libkirk.get_event_loop()
+    exit_code = RC_OK
 
     try:
         loop.run_until_complete(
@@ -398,6 +399,7 @@ async def session_run() -> None:
         try:
             # at this point loop has been closed, so we can collect all
             # tasks and cancel them
+            loop.run_until_complete(session.stop())
             libkirk.cancel_tasks(loop)
         except KeyboardInterrupt:
             pass