Use the passed arguments in remove_dnsha

This appears to be a typo, where self.service_name and self.endpoint_type
was used in the same way as seen in other methods,
but self.service_name or self.endpoint_type is not defined in this class,
or any subclasses of it.
So we can use the passed name and endpoint_type arguments here.

Closes-Bug: #2037515
Change-Id: I12c561057372c11632b2d97fa1763fc92d89f479

interface_hacluster/common.py

@@ -255,8 +255,8 @@ class ResourceManagement():
         :returns: None
         """
         res_key = 'res_{}_{}_hostname'.format(
-            self.service_name.replace('-', '_'),
-            self.endpoint_type)
+            name.replace('-', '_'),
+            endpoint_type)
         self.delete_resource(res_key)
 
     def add_colocation(self, name, score, colo_resources, node_attribute=None):