e2e test cases should clean up more effectively

Graceful deletion exposes weakness in cleanup paths, add
common hooks for waiting for namespcae deletion to complete,
use direct delection where necessary, and add some debug output
for finding cleanup flags (namespaces that aren't fully deleted)

test/e2e/kubectl.go

@@ -78,7 +78,7 @@ var _ = Describe("Kubectl client", func() {
 
 	AfterEach(func() {
 		By(fmt.Sprintf("Destroying namespace for this suite %v", ns))
-		if err := c.Namespaces().Delete(ns); err != nil {
+		if err := deleteNS(c, ns); err != nil {
 			Failf("Couldn't delete ns %s", err)
 		}
 	})
@@ -467,7 +467,7 @@ var _ = Describe("Kubectl client", func() {
 					}
 				}
 				if !found {
-					Failf("Added annation not found")
+					Failf("Added annotation not found")
 				}
 			})
 		})