Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to b3820984a03241099f295930534e18b07d380f9d
  - Merge "Add SO Populate Activity BB Data in Catalog DB"
  - Add SO Populate Activity BB Data in Catalog DB

    Added  SO Populate Activity BB Data in Catalog DB. Make the ID columns
    auto increment activity_spec_categories, activity_spec_to_activity_spec_categories
    Issue-ID: SO-1724
    Signed-off-by: Bonkur, Venkat (vb8416) <vb8416@att.com>
    Change-Id: Ic59727cd8aa13133d6b5ebde98a249cda180cc9d