Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to c3c1f3c20a87cf927d666ee72801619395c0466e
  - Merge "Removed MsoLogger in 'mso-requests-db-adapter'"
  - Removed MsoLogger in 'mso-requests-db-adapter'

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

    Change-Id: Ib9f929ad673e4da122524e8874d07198949eba0b
    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 1f15ae1..c3c1f3c 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 1f15ae1d352cdef1dc14d7d6fa36e70b701b0e91
+Subproject commit c3c1f3c20a87cf927d666ee72801619395c0466e