update makefiles to use cloud build and update README

cluster/addons/fluentd-elasticsearch/README.md

@@ -58,6 +58,14 @@ DaemonSet will ignore them.
 
 Learn more in the [official Kubernetes documentation][k8sElasticsearchDocs].
 
+## Building
+
+Both images are now being hosted in google cloud and are built via the
+[cloud build](https://cloud.google.com/cloud-build/) product.  To build these
+images yourself you will need to have the [gcloud sdk](https://cloud.google.com/sdk/install)
+installed and you will need to login.  You can then run `make` in either
+image directory to trigger a container build.
+
 ### Known problems
 
 Since Fluentd talks to the Elasticsearch service inside the cluster, instances

cluster/addons/fluentd-elasticsearch/es-image/Makefile

@@ -12,20 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-.PHONY:	binary build push
+.PHONY:	build
 
-PREFIX = staging-k8s.gcr.io
+PREFIX = gcr.io/fluentd-elasticsearch
 IMAGE = elasticsearch
 TAG = v6.3.0
 
 build:
-	docker build --pull -t $(PREFIX)/$(IMAGE):$(TAG) .
-
-push:
-	docker push $(PREFIX)/$(IMAGE):$(TAG)
-
-binary:
-	CGO_ENABLED=0 GOOS=linux go build -a -ldflags "-w" elasticsearch_logging_discovery.go
-
-clean:
-	rm elasticsearch_logging_discovery
+	gcloud builds submit --tag ${PREFIX}/${IMAGE}:${TAG}

cluster/addons/fluentd-elasticsearch/fluentd-es-image/Makefile

@@ -12,14 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-.PHONY:	build push
+.PHONY:	build
 
-PREFIX = staging-k8s.gcr.io
-IMAGE = fluentd-elasticsearch
+PREFIX = gcr.io/fluentd-elasticsearch
+IMAGE = fluentd
 TAG = v2.4.0
 
 build:
-	docker build --pull -t $(PREFIX)/$(IMAGE):$(TAG) .
-
-push:
-	docker push $(PREFIX)/$(IMAGE):$(TAG)
+	gcloud builds submit --tag $(PREFIX)/$(IMAGE):$(TAG)