Add e2e Tests for AuthTLS

Adds E2E tests for the following annotations:

- auth-tls-secret
- auth-tls-verify-depth
- auth-tls-verify-client
- auth-tls-error-page
- auth-tls-pass-certificate-to-upstream

test/e2e/framework/framework.go

@@ -263,6 +263,7 @@ func (f *Framework) matchNginxConditions(name string, matcher func(cfg string) b
 				glog.Infof("nginx.conf:\n%v", o)
 			}
 
+			// passes the nginx config to the passed function
 			if matcher(strings.Join(strings.Fields(o), " ")) {
 				match = true
 			}