Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to a8398eef1ac270ab7a145e812856b62171af8b6f
  - Merge "MSA delete services issues fixed for MDONS use case"
  - MSA delete services issues fixed for
    MDONS use case
    
    Issue-ID: SDNC-1189
    Change-Id: I974156a4de10b9962b330abe966b7a95670dd164
    Signed-off-by: Mehreen Kaleem <mehreen.kaleem@us.fujitsu.com>
    
diff --git a/docs/submodules/sdnc/oam.git b/docs/submodules/sdnc/oam.git
index ca9f45c..a8398ee 160000
--- a/docs/submodules/sdnc/oam.git
+++ b/docs/submodules/sdnc/oam.git
@@ -1 +1 @@
-Subproject commit ca9f45cb92f35a6f0235f0a84e8d7b2f50e0e0de
+Subproject commit a8398eef1ac270ab7a145e812856b62171af8b6f