[PSR-2 Compliance] Fix #8612: Hundreds of PHPCS-based static tests violations in mainline

- apply automatic PHP-CS-FIXER fixes to make PHPCS happy
- Step 0. Install php-cs-fixer globally: composer global require friendsofphp/php-cs-fixer:2.1.0
- Step 1. Remove outdated php-cs-fixer config: rm .php_cs
- Step 2. Execute tool: ~/.composer/vendor/friendsofphp/php-cs-fixer/php-cs-fixer fix . --rules=no_extra_consecutive_blank_lines,method_separation -v
- Step 3. Reset changed fixture file to not break related unit test: git checkout HEAD -- lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/SevenInterface.php
- Step 4. Restore outdated php-cs-fixer config: git checkout HEAD -- .php_cs

Author: orlangur

app/code/Magento/Backend/Block/Dashboard/Sales.php

@@ -5,7 +5,6 @@
  */
 namespace Magento\Backend\Block\Dashboard;
 
-
 /**
  * Adminhtml dashboard sales statistics bar
  *

app/code/Magento/Backend/Block/Dashboard/Totals.php

@@ -11,7 +11,6 @@
  */
 namespace Magento\Backend\Block\Dashboard;
 
-
 class Totals extends \Magento\Backend\Block\Dashboard\Bar
 {
     /**

app/code/Magento/Backend/Block/System/Design/Edit/Tab/General.php

@@ -65,7 +65,7 @@ protected function _prepareForm()
                     'required' => true
                 ]
             );
-            $renderer = $this->getLayout()->createBlock(
+            $renderer = $this->getLayout()->createBlock(
                  \Magento\Backend\Block\Store\Switcher\Form\Renderer\Fieldset\Element::class
             );
             $field->setRenderer($renderer);

app/code/Magento/Backend/Block/Widget/Grid/Column/Renderer/Country.php

@@ -9,7 +9,6 @@
  */
 namespace Magento\Backend\Block\Widget\Grid\Column\Renderer;
 
-
 class Country extends \Magento\Backend\Block\Widget\Grid\Column\Renderer\AbstractRenderer
 {
     /**

app/code/Magento/Backend/Service/V1/ModuleService.php

@@ -15,6 +15,7 @@ class ModuleService implements ModuleServiceInterface
      * @var \Magento\Framework\Module\ModuleListInterface
      */
     protected $moduleList;
+
     /**
      * @param \Magento\Framework\Module\ModuleListInterface $moduleList
      */

app/code/Magento/Backend/Test/Unit/Controller/Adminhtml/Cache/CleanStaticFilesTest.php

@@ -48,7 +48,7 @@ protected function setUp()
             ->disableOriginalConstructor()
             ->getMock();
         $objectHelper = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);
-        $context = $objectHelper->getObject(
+        $context = $objectHelper->getObject(
             \Magento\Backend\App\Action\Context::class,
             [
                 'objectManager' => $this->objectManagerMock,
@@ -58,7 +58,7 @@ protected function setUp()
             ]
         );
 
-        $this->controller = $objectHelper->getObject(
+        $this->controller = $objectHelper->getObject(
             \Magento\Backend\Controller\Adminhtml\Cache\CleanStaticFiles::class,
             ['context' => $context,]
         );

app/code/Magento/Backup/Model/Config/Backend/Cron.php

@@ -23,11 +23,9 @@ class Cron extends \Magento\Framework\App\Config\Value
     /** @var \Magento\Framework\App\Config\ValueFactory */
     protected $_configValueFactory;
 
-
     /** @var string */
     protected $_runModelPath = '';
 
-
     /**
      * @param \Magento\Framework\Model\Context $context
      * @param \Magento\Framework\Registry $registry

app/code/Magento/Braintree/Controller/Adminhtml/Payment/GetNonce.php

@@ -5,7 +5,6 @@
  */
 namespace Magento\Braintree\Controller\Adminhtml\Payment;
 
-
 /**
  * Class GetNonce
  */

app/code/Magento/Braintree/Test/Unit/Ui/Component/Report/Filters/Type/DateRangeTest.php

@@ -39,7 +39,6 @@ class DateRangeTest extends \PHPUnit_Framework_TestCase
      */
     private $filterModifierMock;
 
-
     /**
      * @var DataProviderInterface|\PHPUnit_Framework_MockObject_MockObject
      */

app/code/Magento/Bundle/Model/Link.php

@@ -43,7 +43,6 @@ public function setId($id)
         return $this->setData(self::KEY_ID, $id);
     }
 
-
     /**
      * {@inheritdoc}
      */