[rsd-lib] The initialization failed when point rsd-lib to rsd podm api

[Lin Yang]

It failed with following error:

/usr/local/lib/python2.7/dist-packages/sushy/resources/base.pyc in _load(self, body, resource, nested_in)
     78 raise exceptions.MissingAttributeError(
     79 attribute='/'.join(path),
---> 80 resource=resource.path)
     81 else:
     82 # Do not run the adapter on the default value

MissingAttributeError: The attribute <email address hidden> is missing from the resource /redfish/v1/

Because RSD PODM API doesn't provide this SessionService uri in root service, but it is required for sushy library, and rsd-lib totally follow the initialize way of sushy, so it failed.

[Lin Yang (lin-a-yang)]

This has been fixed in https://review.openstack.org/#/c/539416/.