log query string instead of openstack.params and request args
log query string instead of openstack.params and request args

The old code was obviously intending to log the request's query string
(request parameters), but the "params" variable in the local context
refers to a combination of the request's routing arguments and the
openstack.params environment variable.

Change-Id: I4bb8cf1c9d80383536bbc310df65e9dc90df5cc5
Closes-Bug: 1427533

jumpstarter-io/keystone,roopali8/keystone,rushiagr/keystone,vivekdhayaal/keystone,promptworks/keystone,rajalokan/keystone,rushiagr/keystone,klmitch/keystone,vivekdhayaal/keystone,ilay09/keystone,vivekdhayaal/keystone,openstack/keystone,jonnary/keystone,ilay09/keystone,ilay09/keystone,himanshu-setia/keystone,mahak/keystone,jumpstarter-io/keystone,nuxeh/keystone,idjaw/keystone,roopali8/keystone,dims/keystone,promptworks/keystone,jamielennox/keystone,mahak/keystone,jamielennox/keystone,openstack/keystone,himanshu-setia/keystone,nuxeh/keystone,ajayaa/keystone,dstanek/keystone,jonnary/keystone,rushiagr/keystone,takeshineshiro/keystone,ajayaa/keystone,maestro-hybrid-cloud/keystone,openstack/keystone,jumpstarter-io/keystone,mahak/keystone,klmitch/keystone,takeshineshiro/keystone,dstanek/keystone,maestro-hybrid-cloud/keystone,promptworks/keystone,dims/keystone,dstanek/keystone,idjaw/keystone,cernops/keystone,cernops/keystone,rajalokan/keystone,nuxeh/keystone,rajalokan/keystone