ci: use IP rather than DNS for smoke tests
now that we're using manual networks, it's using the IP for the external
URL
set -e
# print once just to see useful output in CI
-bosh instances --dns
+bosh instances
-bosh instances --dns | grep "${BOSH_INSTANCE_GROUP}/" | awk '{print $5}' | head -n1 \
+bosh instances | grep "${BOSH_INSTANCE_GROUP}/" | awk '{print $4}' | head -n1 \
> endpoint-info/instance_ip
