Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to ffce554d009b58c71e433d9edc3ba6476f4ce9ce
  - Revert "GRAPI DG enhancement"

    This reverts commit 8d5a350ab0128e46a81042341f2024a88631d35a.
    This change breaks the flow in a few ways:
     - loses fix to case where now GW preload is found.
     - depends on an adaptor that is not part of ONAP (MSOAdaptor)
     - uses a rest api template that does not exist.

    Change-Id: I7db150174484309e2ec3b49365403ca0d4f7ac6f
    Issue-ID: SDNC-870
    Issue-ID: SDNC-871
    Signed-off-by: Timoney, Dan (dt5972) <dtimoney@att.com>

diff --git a/docs/submodules/sdnc/oam.git b/docs/submodules/sdnc/oam.git
index 829c1b2..ffce554 160000 (submodule)
--- a/docs/submodules/sdnc/oam.git
+++ b/docs/submodules/sdnc/oam.git
@@ -1 +1 @@
-Subproject commit 829c1b2c472f491b108afd6348bd39d570eb0b83
+Subproject commit ffce554d009b58c71e433d9edc3ba6476f4ce9ce