vm: Increase connection timeout for qubes.SuspendPost service

The VM may still be resuming from suspend (for example kernel may still
be in progress of re-initializing grant tables), so the default 5s
sometimes is too little. Increase the connection timeout to the full
'suspend_timeout' - quite excessive, but the whole call is under a
timeout too, so it simply makes different type of timeouts handled
uniformly now. Now, the suspend_timeout effectively covers the whole
call, regardless of how much of that time was spent on waiting for the
connection to be established.

Fixes QubesOS/qubes-issues#9942

Author: marmarek

qubes/vm/qubesvm.py

@@ -1728,7 +1728,9 @@ async def resume(self):
                 try:
                     await asyncio.wait_for(
                         self.run_service_for_stdio(
-                            "qubes.SuspendPost", user="root"
+                            "qubes.SuspendPost",
+                            user="root",
+                            connection_timeout=qubes.config.suspend_timeout,
                         ),
                         qubes.config.suspend_timeout,
                     )