No validation failure when creating resource with incorrect spec.ports.protocol

[spadgett]

The server accepts POST requests with invalid port protocols like lower-case values.

This POST request with "protocol": "tcp" was accepted.

{
  "kind": "Service",
  "apiVersion": "v1beta3",
  "metadata": {
    "name": "nodejs-ex",
    "namespace": "another",
    "selfLink": "/api/v1beta3/namespaces/another/services/nodejs-ex",
    "uid": "1be471b1-147f-11e5-af3c-080027c5bfa9",
    "resourceVersion": "2870",
    "creationTimestamp": "2015-06-16T23:26:26Z",
    "labels": {
      "generatedby": "OpenShiftWebConsole",
      "name": "nodejs-ex"
    }
  },
  "spec": {
    "ports": [
      {
        "protocol": "tcp",
        "port": 8080,
        "targetPort": 8080,
        "nodePort": 0
      }
    ],
    "selector": {
      "deploymentconfig": "nodejs-ex"
    },
    "portalIP": "172.30.51.110",
    "type": "ClusterIP",
    "sessionAffinity": "None"
  },
  "status": {
    "loadBalancer": {}
  }
}

It's also a problem creating deployment configurations with container templates, spec.template.spec.containers.ports.

See #3253