openapi: Add validation logic

This allows validation of a yaml/json object against an openapi schema.
A lot more testing would be needed to validate the logic, and also this
is not plumbed in, so it can't be used by kubectl yet.

pkg/kubectl/cmd/util/openapi/validation/validation_suite_test.go

@@ -0,0 +1,49 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package validation_test
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/ginkgo/config"
+	. "github.com/onsi/ginkgo/types"
+	. "github.com/onsi/gomega"
+
+	"fmt"
+	"testing"
+)
+
+func TestOpenapi(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecsWithDefaultAndCustomReporters(t, "Openapi Suite", []Reporter{newlineReporter{}})
+}
+
+// Print a newline after the default newlineReporter due to issue
+// https://github.com/jstemmer/go-junit-report/issues/31
+type newlineReporter struct{}
+
+func (newlineReporter) SpecSuiteWillBegin(config GinkgoConfigType, summary *SuiteSummary) {}
+
+func (newlineReporter) BeforeSuiteDidRun(setupSummary *SetupSummary) {}
+
+func (newlineReporter) AfterSuiteDidRun(setupSummary *SetupSummary) {}
+
+func (newlineReporter) SpecWillRun(specSummary *SpecSummary) {}
+
+func (newlineReporter) SpecDidComplete(specSummary *SpecSummary) {}
+
+// SpecSuiteDidEnd Prints a newline between "35 Passed | 0 Failed | 0 Pending | 0 Skipped" and "--- PASS:"
+func (newlineReporter) SpecSuiteDidEnd(summary *SuiteSummary) { fmt.Printf("\n") }