Fix parsing pg_ctl output in some locales

for example: "pg_ctl : le serveur est en cours d'exécution (PID : 9286)".

see also: https://bugs.debian.org/843967

Author: lamby

asyncpg/cluster.py

@@ -109,7 +109,7 @@ def get_status(self):
         elif process.returncode == 3:
             return 'stopped'
         elif process.returncode == 0:
-            r = re.match(r'.*PID:\s+(\d+).*', stdout.decode())
+            r = re.match(r'.*PID\s?:\s+(\d+).*', stdout.decode())
             if not r:
                 raise ClusterError(
                     'could not parse pg_ctl status output: {}'.format(