Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to b4aaa6d004c4643e593fc789bbe9776a6226315d
  - Policies import when import VSP

    Polices import implemented.

    Error type added for invalid policies.

    Import tests added.

    Fix test failures.

    Got rid of Either in the new code.

    Change-Id: I3e91cc6d24433c2b3862f407348e71e1e67c3b4e
    Issue-ID: SDC-2728
    Signed-off-by: Dmitry Puzikov <d.puzikov2@partner.samsung.com>

diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index 0c274e9..b4aaa6d 160000 (submodule)
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit 0c274e9356fc77c53340828b0ec18869dad71631
+Subproject commit b4aaa6d004c4643e593fc789bbe9776a6226315d