Promote server version e2e test to conformance

Author: heyste

test/conformance/testdata/conformance.yaml

@@ -1101,6 +1101,12 @@
     events match. Events are produced from writes on a background goroutine.
   release: v1.15
   file: test/e2e/apimachinery/watch.go
+- testname: Confirm a server version
+  codename: '[sig-api-machinery] server version should find the server version [Conformance]'
+  description: Ensure that an API server version can be retrieved. Both the major
+    and minor versions MUST only be an integer.
+  release: v1.19
+  file: test/e2e/apimachinery/server_version.go
 - testname: DaemonSet-FailedPodCreation
   codename: '[sig-apps] Daemon set [Serial] should retry creating failed daemon pods
     [Conformance]'

test/e2e/apimachinery/server_version.go

@@ -26,7 +26,14 @@ import (
 
 var _ = SIGDescribe("server version", func() {
 	f := framework.NewDefaultFramework("server-version")
-	ginkgo.It("should find the server version", func() {
+
+	/*
+	   Release : v1.19
+	   Testname: Confirm a server version
+	   Description: Ensure that an API server version can be retrieved.
+	   Both the major and minor versions MUST only be an integer.
+	*/
+	framework.ConformanceIt("should find the server version", func() {
 
 		ginkgo.By("Request ServerVersion")