Sync with oslo-incubator

Remove obsoleted modules from tree.
Sync with oslo-incubator at commit
838a2a31fe009feb2501716d6656eeea426ea357.

The updated lockfile module needs setting of the lock_path option,
ensure that it is set in the testsuite.

Closes-Bug: #1382189
Change-Id: I43ca76a21bd5bdb45f23af9b99b96aefa635ccc1