Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to d178938c12d54bc17c3c674b29d4c464f059de33
  - Fix macro delete instance bug.

    Fix macro delete instance bug. vf-modules not being sorted correctly
    because isbaseboolean field is not being set.

    Change-Id: Id196e152977d922bee6c9bb797ad240bb70fbf47
    Issue-ID: SO-2053
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 5c58eec..d178938 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 5c58eeca5ffd8b080b9af7619a903eb0acff3a0d
+Subproject commit d178938c12d54bc17c3c674b29d4c464f059de33