Fix host reuse for e2e tests

This will now filter the hosts in gcloud by project, instance name and
zone, to make sure we only reuse the correct hosts. Previously it would
try to reuse images outside the selected zone, resulting in a crash.

The resulting command will look like this:
$ gcloud compute instances list --project="my-project-123" --filter="name:'test-cos-beta-78-12499-16-0' AND zone:'europe-west6-b'"

Author: odinuge

hack/make-rules/test-e2e-node.sh

@@ -117,7 +117,7 @@ if [ "${remote}" = true ] ; then
   IFS=',' read -ra IM <<< "${images}"
        images=""
        for i in "${IM[@]}"; do
-         if gcloud compute instances list "${instance_prefix}-${i}" | grep "${i}"; then
+         if gcloud compute instances list --project="${project}" --filter="name:'${instance_prefix}-${i}' AND zone:'${zone}'" | grep "${i}"; then
            if [[ "${hosts}" != "" ]]; then
              hosts="${hosts},"
            fi