Add secondaryCatchUpPeriodSecs to replSetStepDown command.

secondaryCatchUpPeriodSecs is The number of seconds that the mongod will
wait for an electable secondary to catch up to the primary. We put that
time in 60 secs.

Author: elesbom

dbaas/drivers/mongodb.py

@@ -496,7 +496,10 @@ def data_dir(self, ):
     def switch_master(self, instance=None):
         client = self.get_client(None)
         try:
-            client.admin.command('replSetStepDown', 10)
+            client.admin.command(
+                'replSetStepDown', 60,
+                secondaryCatchUpPeriodSecs=60
+            )
         except pymongo.errors.AutoReconnect:
             pass