lockmgrs need to be released before to be destroyed and draining doesn't make an exception. Add correct stub for it.
lockmgrs need to be released before to be destroyed and draining doesn't
make an exception.
Add correct stub for it.

Reviewed by:	rwatson

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase