resolve & download dependencies in parallel

Change-Id: I729f46ac16ab19c5c5e3c4c61205512be7841e90
diff --git a/jjb/onos/onos-maven-verify.sh b/jjb/onos/onos-maven-verify.sh
index 6702a81..a45677b 100644
--- a/jjb/onos/onos-maven-verify.sh
+++ b/jjb/onos/onos-maven-verify.sh
@@ -7,5 +7,7 @@
 . tools/build/envDefaults
 echo $PATH
 
-mvn clean install -DskipTests -Dcheckstyle.skip
+# resolve & download dependencies in parallel
+mvn dependency:resolve -T 1C
 
+mvn clean install -DskipTests -Dcheckstyle.skip
diff --git a/jjb/onos/onos-yang-tools-verify.sh b/jjb/onos/onos-yang-tools-verify.sh
index 5c11c16..bf97aed 100755
--- a/jjb/onos/onos-yang-tools-verify.sh
+++ b/jjb/onos/onos-yang-tools-verify.sh
@@ -3,4 +3,7 @@
 # exit on errors
 set -eu -o pipefail
 
+# resolve & download dependencies in parallel
+mvn dependency:resolve -T 1C
+
 mvn clean install