Skip more tests when openssl is not enabled.

5.2 environments on travis-ci don't have openssl enabled.

lib/Cake/Test/Case/Network/Http/HttpSocketTest.php

@@ -1707,6 +1707,7 @@ class HttpSocketTest extends CakeTestCase {
  * @return void
  */
 	public function testVerifyPeer() {
+		$this->skipIf(!extension_loaded('openssl'), 'OpenSSL is not enabled cannot test SSL.');
 		$socket = new HttpSocket();
 		try {
 			$result = $socket->get('https://typography.com');