Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 20f8f9f4df0aaee63df846c65c6b7e1797b5061c
  - Merge "change modifiers order and method name"
  - change modifiers order and method name

    change modifiers order and method name VnfAdapterNotify_Service class

    Issue-ID: SO-1490

    Change-Id: I6b3e44ae5959ebdd1161c0375423a9e4a1b7990a
    Signed-off-by: Sindhuri.A <arcot.sindhuri@huawei.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index c7e770d..20f8f9f 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit c7e770dc01aa94402c3acd175806f76806dc0cb5
+Subproject commit 20f8f9f4df0aaee63df846c65c6b7e1797b5061c