Change junit output to $ARTIFACTS

It seems that's what prow uses

Asking prow to set WORKSPACE broke the e2e tests, so I assume that
env-var is already used

Author: adrianmoisey

vertical-pod-autoscaler/hack/run-e2e-locally.sh

@@ -103,9 +103,9 @@ case ${SUITE} in
 
     echo " ** Running suite ${SUITE}"
     if [ ${SUITE} == recommender-externalmetrics ]; then
-       WORKSPACE=./workspace/_artifacts ${SCRIPT_ROOT}/hack/run-e2e-tests.sh recommender
+       ARTIFACTS=./workspace/_artifacts ${SCRIPT_ROOT}/hack/run-e2e-tests.sh recommender
     else
-      WORKSPACE=./workspace/_artifacts ${SCRIPT_ROOT}/hack/run-e2e-tests.sh ${SUITE}
+      ARTIFACTS=./workspace/_artifacts ${SCRIPT_ROOT}/hack/run-e2e-tests.sh ${SUITE}
     fi
     ;;
   *)

vertical-pod-autoscaler/hack/run-e2e-tests.sh

@@ -47,7 +47,7 @@ export GO111MODULE=on
 ABSOLUTE_PATH=$(realpath "${SCRIPT_ROOT}")
 export GOBIN="${ABSOLUTE_PATH}/e2e/_output/bin"
 
-export WORKSPACE=${WORKSPACE:-/workspace/_artifacts}
+export ARTIFACTS=${ARTIFACTS:-/workspace/_artifacts}
 
 SKIP="--ginkgo.skip=\[Feature\:OffByDefault\]"
 
@@ -62,7 +62,7 @@ case ${SUITE} in
     export KUBECONFIG=$HOME/.kube/config
     pushd ${SCRIPT_ROOT}/e2e
     go install github.com/onsi/ginkgo/v2/ginkgo
-    ${GOBIN}/ginkgo build v1/ && ${GOBIN}/ginkgo --nodes=$NUMPROC --focus="\[VPA\] \[${SUITE}\]" v1/v1.test -- --report-dir=${WORKSPACE} --disable-log-dump ${SKIP}
+    ${GOBIN}/ginkgo build v1/ && ${GOBIN}/ginkgo --nodes=$NUMPROC --focus="\[VPA\] \[${SUITE}\]" v1/v1.test -- --report-dir=${ARTIFACTS} --disable-log-dump ${SKIP}
     V1_RESULT=$?
     popd
     echo v1 test result: ${V1_RESULT}