Don't use the local config for tests

[Feilong Wang]

Based on current implement, Marconi is using local config for tests. But obviously, it doesn't make sense. IMHO, only the config under tests/etc/ should be used, except there is an explicit configuration.

[Malini Kamalambal (malini-pk)]

Using a local config is useful, when you need to run the functional tests etc. against a remote marconi-server.
You could store the keystone credentials etc. in the external config, without having to worry tht these will get accidentally uploaded with a patcheset

[Feilong Wang (flwang)]

Sounds like it's a design preference, thanks for the clarification.