Update git submodules

Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Support both admin role name

    Depending of the installer the admin role name can be admin
    or Admin.

    This patch was tested:
    +-------------------+------------------+------------------+----------------+
    |     TEST CASE     |     PROJECT      |     DURATION     |     RESULT     |
    +-------------------+------------------+------------------+----------------+
    |     api_check     |     functest     |      09:60       |      PASS      |
    +-------------------+------------------+------------------+----------------+

    Change-Id: I99815777794cd6524213abca1f04ec84dae1e760
    Signed-off-by: Valentin Boucher <valentin.boucher@kontron.com>