Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to 4067c21aafd96649d687c7a1dc3d0215710e61df
  - SDWAN vpn-site-resource DG parameter change

    1. parameter name vnf-index changed to vnf-id to set
       id returned from generateUUID.
    2. Deleted commented lines in service relationship in AAI

    Change-Id: I5aaac2e15ff2ea2bc1c590d8c6c4818d8f84d047
    Issue-ID: SDNC-659
    Signed-off-by: Prakash.E <prakash.e@huawei.com>

diff --git a/docs/submodules/sdnc/oam.git b/docs/submodules/sdnc/oam.git
index c1b7f14..4067c21 160000 (submodule)
--- a/docs/submodules/sdnc/oam.git
+++ b/docs/submodules/sdnc/oam.git
@@ -1 +1 @@
-Subproject commit c1b7f1400023567a2e138282592aaebd389738bc
+Subproject commit 4067c21aafd96649d687c7a1dc3d0215710e61df