Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 02f48806b4f8e2299cbfb0388b7fb8525d1dcb0a
  - Fix test docker readiness check

     - add probe_test_docker function to check test docker readiness
     - minor improvements to docker_run and test docker startup scripts

    Issue-ID: SDC-2376
    Change-Id: If1ee25e8c7850c8e65a520f645ff80c7d5d36373
    Signed-off-by: kaihlavi <l.kaihlavirt@partner.samsung.com>

diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index 061ca93..02f4880 160000 (submodule)
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit 061ca938ca6998b4ec33a862c763854259cfeab1
+Subproject commit 02f48806b4f8e2299cbfb0388b7fb8525d1dcb0a