Add index param for ServerConfig.add_connector()

The ServerConfig.add_connector() has been updated to take an
optional param which specifies the index of the new connector.
If not specified, the new connector will be added after the
last connector.

base/server/python/pki/server/__init__.py

@@ -1803,28 +1803,31 @@ def get_connector(self, name=None, port=None):
 
         return service.find(xpath)
 
-    def create_connector(self, name):
+    def create_connector(self, name, index=None):
         '''
         Create connector and add it after the last connector.
         '''
 
         connector = etree.Element('Connector')
         connector.set('name', name)
 
-        self.add_connector(connector)
+        self.add_connector(connector, index=index)
 
         return connector
 
-    def add_connector(self, connector):
+    def add_connector(self, connector, index=None):
         '''
         Add connector after the last connector.
         '''
 
         service = self.get_service()
         connectors = service.findall('Connector')
-        last_connector = connectors[-1]
 
-        index = service.index(last_connector) + 1
+        if index is None:
+            # insert after the last connector
+            last_connector = connectors[-1]
+            index = service.index(last_connector) + 1
+
         service.insert(index, connector)
 
     def remove_connector(self, name):