Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to e39c2cbf62f993dbe7843b3eb360c485ef445554
  - Merge "mso should not send content type http header to"
  - mso should not send content type http header to

    Updated getHeaders to not add Content-Type header on GET requests
    Updated getHttpHeaders boolean to includeContentType

    Issue-ID: SO-2366
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@att.com>
    Change-Id: I476bf02791d699cda2ca4118c8f578c96461097e

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 7a19f3d..e39c2cb 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 7a19f3d53a4983a3986ba6adba3f35bd7e54f254
+Subproject commit e39c2cbf62f993dbe7843b3eb360c485ef445554