Update git submodules

Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to 8e1a5cefb9b8892854aa11dbf48174adc259835f
  - Merge "Fixed vf-module-topology DG with valid request-action"
  - Fixed vf-module-topology DG with valid request-action

    New request-actions added in GENERIC-RESOURCE-API.yang.
    CreateSDWANSiteInstance, ActivateSDWANSiteInstance,
    DeactivateSDWANSiteInstance, DeleteSDWANSiteInstance are
    added and it is replaced in vf-module-topology DG

    Change-Id: I0898056cb43763ff04eda0e503bc05706b283f3d
    Issue-ID: SDNC-659
    Signed-off-by: Prakash.E <prakash.e@huawei.com>