Resolve potential dep issue with python-deamon

Fixing up docs to ensure python-daemon submodule pidlockfile is
available by specifying version of daemon and lockfile.

This is short term fix, long term solution will be to fix
related code so it works regardless of daemon version.

Change-Id: Ib9f65588c1b241ab1fc090e94132e2f08312551d
Partial-Bug: #1326494
Merge "Resolve potential dep issue with python-deamon"