Update submodules in do-build.sh.

cicd_testing/do-build.sh

@@ -6,6 +6,10 @@ set -x
 main()
 {
 
+   # update submodules
+    git submodule sync --recursive
+    git submodule update --recursive --init
+
 	# gather info for debugging later, probably not necessary 
 	pwd
 	hostname