pass --parallel

Author: mr-c

jenkins.bash

@@ -42,12 +42,11 @@ do
 	pip${PYTHON_VERSION} install "cwltest>=1.0.20180518074130" codecov
 	pushd common-workflow-language-master
 	rm -f .coverage*
+	EXTRA="--parallel"
 	# shellcheck disable=SC2154
 	if [[ "$version" = *dev* ]]
 	then
-		EXTRA=" --enable-dev"
-	else
-		EXTRA=""
+		EXTRA+=" --enable-dev"
 	fi
 	if [[ "$CONTAINER" = "singularity" ]]
 	then