Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 28a0ce73a022a5ccecadae6b3172beb15e3f46ab
  - Merge "Updated closing gateway to be inclusive instead."
  - Updated closing gateway to be inclusive instead.

    Updated closing gateway to be inclusive instead.

    Change-Id: If877bf71b406d00f7a0e277b88f9e3064e642be0
    Issue-ID: SO-1868
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 4b5bf1b..28a0ce7 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 4b5bf1b5bbee86cfc3efedb5be78e797c697f7c5
+Subproject commit 28a0ce73a022a5ccecadae6b3172beb15e3f46ab