Update git submodules

Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to fc6b5397529d984b897e6ce681f4257258bb9645
  - Merge "vf module id validation removed from DG"
  - vf module id validation removed from DG

    GRA provider code is modified to return vf module id
    if present in the input request otherwise vf module id
    (Generated in DG)will be returned from the response object.
    In validate-vf-module-input DG vf-id validation check
    is deleted.

    Change-Id: I389d2d42a939c60481cd7690ccb98b3f820974e4
    Issue-ID: SDNC-653
    Signed-off-by: shashikanth.vh <shashikanth.vh@huawei.com>