Update git submodules

Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to 8436b953a938452f2d7c865e3bc2449ecfcabdea
  - Fix admportal image

    Docker container should be stateless and be self-contained. When image
    is run as container it should behave exactly the same with each run.

    This commit moves npm install stuff into docker build stage where
    it belongs.

    Please, read:
    https://docs.docker.com/get-started/part2/

    Issue-ID: SDNC-685
    Signed-off-by: Petr Ospalý <p.ospaly@partner.samsung.com>
    Change-Id: I4ff18b313a9af400bbfc2cbf6f4a1b1334593d9a