Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 67437109d8df88ff494f8bd14faef44b7f5a2dee
  - Some unit tests for catalog-be
    
    Code coverage for some classes from catalog-be increased.
    Some refactor made if needed.
    
    Change-Id: I33114eed03d4e176896fd803b54fb77787c34283
    Issue-ID: SDC-2220
    Signed-off-by: Tomasz Golabek <tomasz.golabek@nokia.com>
    
diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index a8e3bf2..6743710 160000
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit a8e3bf27eec7832a89522b776f08dda8dc0985d2
+Subproject commit 67437109d8df88ff494f8bd14faef44b7f5a2dee