Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to a73cbca41fbba96855173f39c89c04d50d4d8672
  - File name calculation refactoring

    FSConfigurationSource file name calculation refactoring and tests

    Change-Id: Idf1c45f860e12c14cfe88417500f2169b5dc86f7
    Issue-ID: SDC-2474
    Signed-off-by: Piotr Darosz <piotr.darosz@nokia.com>

diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index 4d8364e..a73cbca 160000 (submodule)
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit 4d8364e7ac25838c0aeabcd89af2e447c30d9426
+Subproject commit a73cbca41fbba96855173f39c89c04d50d4d8672