Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to d109233f1a626d5bbb299209ff94dcee3aac4693
  - Merge "logic to handle null values for vf module index"
  - logic to handle null values for vf module index

    added logic to handle null values for vf module index

    Change-Id: I53f4ed8b307a92187c22f19dbc7bb101d037fbd8
    Issue-ID: SO-1465
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index d76c6f0..d109233 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit d76c6f0f6da7bbce853c96c3d3472a446b2f3c1f
+Subproject commit d109233f1a626d5bbb299209ff94dcee3aac4693