Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 0f4371f47e72c413b2a28d3a0426bdac49f1291b
  - Merge "Removed MsoLogger from 'mso-api-handler-common'"
  - Removed MsoLogger from 'mso-api-handler-common'

    Replaced MsoLogger with plain slf4j.
    Refactored login output.
    Fixed imports.

    Change-Id: I4254087187c9b7006d0dac8b3ab13fe41113c42f
    Issue-ID: LOG-631
    Signed-off-by: Robert Bogacki <r.bogacki@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 09b025a..0f4371f 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 09b025a1f352b60cab591e467b1a2b56ca856147
+Subproject commit 0f4371f47e72c413b2a28d3a0426bdac49f1291b