Merge pull request #40250 from krzyzacy/node-conformance-fix

Automatic merge from submit-queue (batch tested with PRs 40250, 40134, 40210)

Add --ssh-user to conformance script as well

**What this PR does / why we need it**:
Fix the permission issue on [node-conformance-dockerized](http://k8s-testgrid.appspot.com/google-node#kubelet-conformance-gce-e2e-dockerized)

we added it to [node-jenkins](https://github.com/kubernetes/kubernetes/blob/master/test/e2e_node/jenkins/e2e-node-jenkins.sh#L45) but not conformance

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
```

test/e2e_node/jenkins/conformance/conformance-jenkins.sh

@@ -33,7 +33,7 @@ TIMEOUT=${TIMEOUT:-"45m"}
 mkdir -p ${ARTIFACTS}
 
 go run test/e2e_node/runner/remote/run_remote.go  conformance \
-  --logtostderr --vmodule=*=4 --ssh-env="gce" \
+  --logtostderr --vmodule=*=4 --ssh-env="gce" --ssh-user="$GCE_USER" \
   --zone="$GCE_ZONE" --project="$GCE_PROJECT" --hosts="$GCE_HOSTS" \
   --images="$GCE_IMAGES" --image-project="$GCE_IMAGE_PROJECT" \
   --image-config-file="$GCE_IMAGE_CONFIG_PATH" --cleanup="$CLEANUP" \