Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to 570153b334e64246b2eff459d18d6eac6df70e22
  - Fix SDWAN site role passed to controller

    SDWAN site role dsvpn-hub and sdwan-edge is not fetched
    and passed to controller. Now it is fetched in for loop
    and passed to controller.

    Change-Id: I85b7be5bdc802fa7144631aeaf3cf19bc3fde979
    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 8e1a5ce..570153b 160000 (submodule)
--- a/docs/submodules/sdnc/oam.git
+++ b/docs/submodules/sdnc/oam.git
@@ -1 +1 @@
-Subproject commit 8e1a5cefb9b8892854aa11dbf48174adc259835f
+Subproject commit 570153b334e64246b2eff459d18d6eac6df70e22