Moved HHVM builds to Wercker CI (#3809)

* enabled wercker HHVM builds

* added unit core tests

* triggering tests once again

* fixed removing composer.lock even if it is not present

* disable linting inside hhvm

* we don't need need to lint our internal tests. At least we know how to handle syntax errors in PHP tests...

* fixed starting hhvm server
disabled linting for most of cli tests

* fixed running cli suite

* removed parser Cept tests (is not a unit test, config dependent)
fixed @amqp test

* mysql, redis, postgresql tests added to wercker

* reverted -U postgres in travis db tests

Author: DavertMik

tests/unit/Codeception/Module/AMQPTest.php

@@ -23,7 +23,7 @@ public function setUp()
     {
         $this->module = new \Codeception\Module\AMQP(make_container());
         $this->module->_setConfig($this->config);
-        $res = stream_socket_client('tcp://localhost:5672');
+        $res = @stream_socket_client('tcp://localhost:5672');
         if ($res === false) {
             $this->markTestSkipped('AMQP is not running');
         }