Move EXPECTED_DEFAULT_DRIVER to a test arg

Author: tstromberg

hack/jenkins/common.sh

@@ -257,7 +257,8 @@ fi
 echo ""
 echo ">> Starting ${E2E_BIN} at $(date)"
 ${SUDO_PREFIX}${E2E_BIN} \
-  -minikube-start-args="--vm-driver=${VM_DRIVER} ${EXTRA_START_ARGS} --expected-default-driver=${EXPECTED_DEFAULT_DRIVER}" \
+  -minikube-start-args="--vm-driver=${VM_DRIVER} ${EXTRA_START_ARGS}" \
+  --expected-default-driver="${EXPECTED_DEFAULT_DRIVER}" \
   -test.timeout=60m \
   -test.parallel=${PARALLEL_COUNT} \
   -binary="${MINIKUBE_BIN}" && result=$? || result=$?