Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 2f89bc38f624e4ff5e5644ba7e61afd2ed957ee2
  - Merge "PUT description into A&AI for instance-group."
  - PUT description into A&AI for instance-group.

    PUT description into A&AI for instance-group, one-line code change.

    Change-Id: I151ad4743d547e8f4fa013e23e0670e81ad1ea63
    Issue-ID: SO-1774
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 70ab72a..2f89bc3 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 70ab72a08c6d0a9976748806546c6ef04bc49f8e
+Subproject commit 2f89bc38f624e4ff5e5644ba7e61afd2ed957ee2