Be explicit about set_default() parameters
Be explicit about set_default() parameters

We probably only want to support people using set_defaults() for a
limited set of config options, so explicitly list those as parameters
to the method. This is what we do for rpc and log options too.

Change-Id: I3bfc5355e82eec17480b9547662e847dc0d74138

openstack/oslo.db,malor/oslo.db,vikt0rs/oslo.db,openstack/oslo.db,akash1808/oslo.db,magic0704/oslo.db,JioCloud/oslo.db,varunarya10/oslo.db