Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to bbd4b0f39343d3a37660a35680db433f56599179
  - Merge "Add ut for ActivateSliceService and update ut for ActivateCommunicationService"
  - Add ut for ActivateSliceService and update ut for ActivateCommunicationService

    Issue-ID: SO-2368

    Change-Id: I0ec9db116fae10c63e0de9582491e80600a9b145
    Signed-off-by: hetengjiao <hetengjiao@chinamobile.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 94dc235..bbd4b0f 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 94dc235a63885c80b26f3753f56e7dd520a896a0
+Subproject commit bbd4b0f39343d3a37660a35680db433f56599179