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.

api/swagger-spec/resourceListing.json

@@ -1,14 +1,14 @@
 {
   "swaggerVersion": "1.2",
   "apis": [
-   {
-    "path": "/api",
-    "description": "get available API versions"
-   },
    {
     "path": "/api/v1beta3",
     "description": "API at /api/v1beta3 version v1beta3"
    },
+   {
+    "path": "/api",
+    "description": "get available API versions"
+   },
    {
     "path": "/version",
     "description": "git code version from which this is built"
@@ -19,4 +19,4 @@
    "title": "",
    "description": ""
   }
- }
+ }