Delete deprecated API versions

pkg/service:

There were a couple of references here just as a reminder to change the
behavior of findPort. As of v1beta3, TargetPort was always defaulted, so
we could remove findDefaultPort and related tests.

pkg/apiserver:

The tests were using versioned API codecs for some of their encoding
tests. Necessary API types had to be written and registered with the
fake versioned codecs.

pkg/kubectl:

Some tests were converted to current versions where it made sense.

cluster/addons/cluster-monitoring/google/heapster-controller.yaml

@@ -16,7 +16,7 @@ spec:
         kubernetes.io/cluster-service: "true"
     spec: 
       containers: 
-        - image: gcr.io/google_containers/heapster:v0.12.1
+        - image: gcr.io/google_containers/heapster:v0.13.0
           name: heapster
           command:
             - /heapster

cluster/addons/cluster-monitoring/influxdb/heapster-controller.yaml

@@ -16,7 +16,7 @@ spec:
         kubernetes.io/cluster-service: "true"
     spec: 
       containers: 
-        - image: gcr.io/google_containers/heapster:v0.12.1
+        - image: gcr.io/google_containers/heapster:v0.13.0
           name: heapster
           command:
             - /heapster