Update git submodules

* Update docs/submodules/optf/cmso.git from branch 'master'
  to 906b7987ef35115366a07af11e40ddad7462794e
  - Merge "Migrate optf-cmso docs"
  - Migrate optf-cmso docs
    
    Merging this will create
    https://onap-optf-cmso.readthedocs.io
    This build will run in parallel
    to the current docs generation method
    until we are ready to cut over.
    
    Issue-ID: CIMAN-364
    Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
    Change-Id: Ie5c421db11b77408fd901df5c283c116ec6af632
    
1 file changed