Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to a9b2f9970d34f286bc011ebf0b0d8771c9d1a324
  - Merge "Removed MsoLogger from 'cloudify-client'"
  - Removed MsoLogger from 'cloudify-client'

    Removed MsoLogger from adapters ('cloudify-client')
    Replaced MsoLogger with plain slf4j.
    Refactored login output.
    Fixed imports.

    Change-Id: I3d1f31a1ec8250772290383c23e65a0d5cc575a0
    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 7143ac4..a9b2f99 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 7143ac416a61ff865c86001d0357259748b48b85
+Subproject commit a9b2f9970d34f286bc011ebf0b0d8771c9d1a324