Fix bug in the base MockHttp class which was there for a long time since

we incorrectly used class attribute value instead of the value passed to
the method.

This could result in all kinds of weird edge cases and test failures in
case the environment wasn't correctly reset before / after each test.

libcloud/test/__init__.py

@@ -205,7 +205,7 @@ def _get_method_name(self, type, use_param, qs, path):
         )  # Python 3.7 no longer quotes ~
 
         if type:
-            meth_name = "{}_{}".format(meth_name, self.type)
+            meth_name = "{}_{}".format(meth_name, type)
 
         if use_param and use_param in qs:
             param = qs[use_param][0].replace(".", "_").replace("-", "_")