Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 632f2ff1ef005a801c0676367e90417f9ca00c57
  - Merge "auto generated vf module index param"
  - auto generated vf module index param

    added test for when this is the first vfmodule added
    unit test no longer tests already created vnf
    refactored test to be more clear about uuid grouping
    Added javadoc for getLowestUnusedVfModIndex method.
    Increment index by vf module model invariant uuid
    Fix unnecessary whitespace delta for GenericVnf file
    Fix GenericVnf and modify junit for setting vfmodules

    Change-Id: Iacd31c5bf73c971c0b3c06e790d4c5193c3c9860
    Issue-ID: SO-1458
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>