Update git submodules

Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 3b72874a95ce734f555334fb0fba987a069664d0
  - Add validation of non referenced file in package

    Add the validation specified in SOL004, that all files in the package
    should be listed in the Manifest file.
    Fix Validator related Test class, adapting to the new validation.
    Create a manifest builder to help the tests.
    Fix minor typos.
    Update .gitignore to remove ajcore files.

    Change-Id: Ib9a99bf3d7905349e0ec8fef8fd960028bb83f8d
    Issue-ID: SDC-2412
    Signed-off-by: andre.schmid <andre.schmid@est.tech>