Convert floats to string

We do it for int values, so floats should be covered, too.

Change-Id: I1b98f7887ad421596b3bfdf2f6ad871a7d7f6bb2

os_client_config/config.py

@@ -239,6 +239,8 @@ class OpenStackConfig(object):
                 new_config[key] = value
             elif isinstance(value, int):
                 new_config[key] = str(value)
+            elif isinstance(value, float):
+                new_config[key] = str(value)
             else:
                 new_config[key] = value
         return new_config