QMP/qemu-ga-client: Make timeout longer for guest-fsfreeze-freeze command

guest-fsfreeze-freeze command can take longer than 3 seconds when heavy
disk I/O is running. To avoid unexpected timeout, this changes the timeout
to 60 seconds (timeout of pre-commit phase of VSS).
Signed-off-by: NTomoki Sekiyama <tomoki.sekiyama@hds.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NLaszlo Ersek <lersek@redhat.com>
Reviewed-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>

QMP/qemu-ga-client

@@ -267,7 +267,9 @@ def main(address, cmd, args):
             print('Hint: qemu is not running?')
         sys.exit(1)
 
-    if cmd != 'ping':
+    if cmd == 'fsfreeze' and args[0] == 'freeze':
+        client.sync(60)
+    elif cmd != 'ping':
         client.sync()
 
     globals()['_cmd_' + cmd](client, args)