Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to d9d72dae9cfc1011aa5cf3326e09aa219e50b462
  - Removed MsoLogger from 'mso-requests-db'

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

    Change-Id: I97fd5981b503b132fbbf4f64047481420c9c5fa6
    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 23279e5..d9d72da 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 23279e5d562e8c21c8ded22c91fd75752a19aa22
+Subproject commit d9d72dae9cfc1011aa5cf3326e09aa219e50b462