Merge branch '3.4' into 4.0

* 3.4:
  [Form] fix tests on old phpunit versions
  [FrameworkBundle] fix typo in CacheClearCommand
  bumped Symfony version to 3.4.11
  updated VERSION for 3.4.10
  updated CHANGELOG for 3.4.10
  fixed test

src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php

@@ -122,7 +122,7 @@ EOF
         if ('/' === \DIRECTORY_SEPARATOR && $mounts = @file('/proc/mounts')) {
             foreach ($mounts as $mount) {
                 $mount = array_slice(explode(' ', $mount), 1, -3);
-                if (!\in_array(array_pop($mount), array('vboxfs', 'nfs'))) {
+                if (!\in_array(array_pop($mount), array('vboxsf', 'nfs'))) {
                     continue;
                 }
                 $mount = implode(' ', $mount).'/';

src/Symfony/Component/Form/Test/Traits/ValidatorExtensionTrait.php

@@ -31,7 +31,7 @@ trait ValidatorExtensionTrait
         }
 
         $this->validator = $this->getMockBuilder(ValidatorInterface::class)->getMock();
-        $metadata = $this->getMockBuilder(ClassMetadata::class)->disableOriginalConstructor()->getMock();
+        $metadata = $this->getMockBuilder(ClassMetadata::class)->disableOriginalConstructor()->setMethods(array('addPropertyConstraint'))->getMock();
         $this->validator->expects($this->any())->method('getMetadataFor')->will($this->returnValue($metadata));
         $this->validator->expects($this->any())->method('validate')->will($this->returnValue(array()));
 

src/Symfony/Component/Form/Tests/Extension/Validator/ValidatorExtensionTest.php

@@ -22,6 +22,7 @@ class ValidatorExtensionTest extends TestCase
             ->disableOriginalConstructor()
             ->getMock();
         $metadata = $this->getMockBuilder('Symfony\Component\Validator\Mapping\ClassMetadata')
+            ->setMethods(array('addConstraint', 'addPropertyConstraint'))
             ->disableOriginalConstructor()
             ->getMock();