Support branch cord-5.0

Change-Id: I31838d8a639e2c9864eb04e506500f6faf2e0ee5
diff --git a/scripts/cord-bootstrap.sh b/scripts/cord-bootstrap.sh
index b6121c2..efa8f01 100755
--- a/scripts/cord-bootstrap.sh
+++ b/scripts/cord-bootstrap.sh
@@ -29,7 +29,7 @@
 MAKECMD="${MAKECMD:-make -j4}"
 
 # CORD versioning
-REPO_BRANCH="${REPO_BRANCH:-master}"
+REPO_BRANCH="${REPO_BRANCH:-cord-5.0}"
 
 # Tool/OS versioning
 HOST_RELEASE=`lsb_release -c -s`