Fix-up some probelms with test suite

 - Mark AbstractController to ignore CouplingBetweenObjects
 - Set the same json_decode default that Zend_Json uses

Author: dmanners

dev/tests/integration/framework/Magento/TestFramework/TestCase/AbstractController.php

@@ -15,6 +15,7 @@
 
 /**
  * @SuppressWarnings(PHPMD.NumberOfChildren)
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
 abstract class AbstractController extends \PHPUnit_Framework_TestCase
 {

dev/tests/integration/testsuite/Magento/Email/Model/TemplateTest.php

@@ -108,7 +108,7 @@ public function testLoadDefault()
         $this->assertNotEmpty($this->model->getTemplateText());
         $this->assertNotEmpty($this->model->getTemplateSubject());
         $this->assertNotEmpty($this->model->getOrigTemplateVariables());
-        $this->assertInternalType('array', json_decode($this->model->getOrigTemplateVariables()));
+        $this->assertInternalType('array', json_decode($this->model->getOrigTemplateVariables(), true));
     }
 
     /**