Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 2ca6a9f860889c17202d4a518eefc980a1bb139a
  - Improved unit tests for ArtifactValidationUtils and Sonar fixes.

    Added new tests for ArtifactValidationUtils.
    Checkstyle in the ValidationConfigManager and ArtifactValidationUtils.
    Added private constructor to ValidationConfigManager.
    Added logger for ArtifactValidationUtils and simplified code.
    Updated the ValidationConfigManagerTest and ReportManagerTests
    to not influence on each other.

    Issue-ID: SDC-2327
    Signed-off-by: Krystian Kedron <k.kedron@partner.samsung.com>
    Change-Id: I9c7c725792737b6cfa6bba20eeeb3b1d4ef1e471

diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index aebdb3e..2ca6a9f 160000 (submodule)
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit aebdb3efa77f2cbeaf65361be3f46528f089b17a
+Subproject commit 2ca6a9f860889c17202d4a518eefc980a1bb139a