Updated git submodules

Project: sdc master 02ab6515cd2a2f38aa548d9c64753067a0b1daed

update maven-assembly-plugin

update version to 3.1.0

should fix issue in downloading the depandencys twice
Issue-ID: SDC-1191

Change-Id: I83da786e04c161634ae8aed592501ef73834ab1d
Signed-off-by: Michael Lando <ml636r@att.com>

diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index 0463fd2..02ab651 160000 (submodule)
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit 0463fd273277e82ee349c67feab08be157c515ca
+Subproject commit 02ab6515cd2a2f38aa548d9c64753067a0b1daed