Updated release process to new e2e test interface (#76)

* Updated release process to new e2e test interface

Depends on Stackdriver/stackdriver-prometheus-e2e#3

* Update RELEASE-PROCESS.md

Author: jkohen

RELEASE-PROCESS.md

@@ -2,12 +2,16 @@
 
 Make sure the [end-to-end test](https://github.com/Stackdriver/stackdriver-prometheus-e2e) passes:
 ```sh
+export KUBE_CLUSTER=integration-cluster
+# Random namespace name in the form e2e-xxxxxxxx.
+export KUBE_NAMESPACE="e2e-$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 8 | head -n 1)"
+export GCP_PROJECT=prometheus-to-sd
+export GCP_REGION=us-central1-a
+
 make DOCKER_IMAGE_TAG=$USER push
-( cd kube/full ; GCP_REGION=us-central1-a GCP_PROJECT=prometheus-to-sd KUBE_CLUSTER=integration-cluster KUBE_NAMESPACE=$USER SIDECAR_IMAGE_TAG=$USER ./deploy.sh )
-( cd ../stackdriver-prometheus-e2e ; make CLUSTER_NAME=integration-cluster START_PROMETHEUS=false )
-kubectl delete namespace $USER
+( cd kube/full ; SIDECAR_IMAGE_TAG=$USER ./deploy.sh )
+( cd ../stackdriver-prometheus-e2e ; make )
+kubectl delete namespace ${KUBE_NAMESPACE}
 ```
 
-`START_PROMETHEUS=false` prevents the old Prometheus integration from starting as part of the test.
-
 If OK, then release by running `./release.sh {VERSION}`