remove 'replset/' prefix from config server hostnames

Author: Tim Vaillancourt

MongoBackup/Sharding.py

@@ -112,6 +112,8 @@ def get_configdb_hosts(self):
             if config_string:
                 # noinspection PyBroadException
                 try:
+                    if "/" in config_string:
+                        config_replset, config_string = config_string.split("/")
                     return config_string.split(',')
                 except Exception:
                     return [config_string]