Add framework.ConformanceIt as the new way to declare conformance tests.

Also rewrite all existing conformance tests to use this.

test/e2e/framework/framework.go

@@ -634,6 +634,11 @@ func KubeDescribe(text string, body func()) bool {
 	return Describe("[k8s.io] "+text, body)
 }
 
+// Wrapper function for ginkgo It.  Adds "[Conformance]" tag and makes static analysis easier.
+func ConformanceIt(text string, body interface{}, timeout ...float64) bool {
+	return It(text+" [Conformance]", body, timeout...)
+}
+
 // PodStateVerification represents a verification of pod state.
 // Any time you have a set of pods that you want to operate against or query,
 // this struct can be used to declaratively identify those pods.