codegen: Remove util.h from generated files Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>

RESPONDER: A sbus interface to reset negatively cached users and groups Adds two new responder sbus interface functions: ResetNegcacheUsers and ResetNegcacheGroups. These functions can be called by a Data Provider to signal to a responder that it should drop its negative cache. Reviewed-by: Pavel Březina <pbrezina@redhat.com>

RESPONDER: Add a responder sbus interface to set domain state Adds a generic responder s-bus interface that all responders implement. The interface currently contains methods that make it possible for a sssd domain to be marked as active or inconsistent by a back end. In the future, this commit will be superseded by sbus signals. Reviewed-by: Pavel Březina <pbrezina@redhat.com>