Update git submodules

Update git submodules

* Update docs/submodules/osa.git from branch 'master'
  to 2ffd40cf69006a1346dd63f2f7ae11837ffd27cc
  - fix osa docs with new docs

    example of how this changeset was created.
    includes link to documentation:
    https://gist.github.com/Aricg/bf95ef40c542ba211be8771e88e6f410

    merging this will create
    https://onap-osa.readthedocs.io

    This build will run in parralelle
    to the current docs generation method
    untill we are ready to cut over.

    Issue-ID: CIMAN-33
    Signed-off-by: Aric Gardner <agardner@linuxfoundation.org>
    Change-Id: I4a477027bcc858c799228f77c9a37b55c0659fd9