The change d9759d24884cee443b5e9bd57bde1fb738271fdd incorrectly
implement parameter usage and it made auth_url parameters of
the following classes ineffective.
- trove::taskmanager
- trove::conductor
This change fixes these two parameters and ensures these the given
values are used to define config values. These parameters are also
deprecated to be replaced completely by the service_credential classes.
Change-Id: I028af124586ce366545b189694f9459597ce5ac1
4b3962b803