Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to d42583c1fa3fabd7e4615d66593560469a652213
  - Merge "Remove MsoLogger from 'mso-openstack-adapters'"
  - Remove MsoLogger from 'mso-openstack-adapters'

    Removed MsoLogger from adapters ('mso-openstack-adapters')
    Replaced MsoLogger with plain slf4j
    Refactored login output
    Fixed imports

    Change-Id: Ib9da84f659dcc57a374f9b684ce8fbf30e866d4d
    Issue-ID: LOG-631
    Signed-off-by: k.kazak <k.kazak@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index f4c4f91..d42583c 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit f4c4f91985b5efca53c25dd518ebadc00559f160
+Subproject commit d42583c1fa3fabd7e4615d66593560469a652213