Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 5d51903c2012077970240aa295d060441d2947a7
  - Merge "Removed duplicate use of networkType field in String.format() call to prevent static analyzer warning"
  - Removed duplicate use of networkType field in
    String.format() call to prevent static analyzer
    warning

    Issue-ID: SO-1841
    Signed-off-by: Oleksandr Moliavko <o.moliavko@samsung.com>
    Change-Id: I1e3ea352aac9a88172b683d267b2f3c804bb362b

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index d46e55a..5d51903 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit d46e55a380566af20c21553b74a9edb9dcbc5c51
+Subproject commit 5d51903c2012077970240aa295d060441d2947a7