[Tests] Silenced all deprecations in tests for 2.3
update required minimum TwigBridge version

To be able to use `Twig_SimpleFunction` in `AssetsExtension`, Twig has
to be present in version 1.12 or higher. The TwigBridge only enforces
this Twig version as of version 2.3.10.
minor #13033 [Tests] Silenced all deprecations in tests for 2.3 (saro0h)

This PR was merged into the 2.3 branch.

Discussion
----------

[Tests] Silenced all deprecations in tests for 2.3

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | ~
| License       | MIT
| Doc PR        | ~

Also removed src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php as it was not running at all.

Commits
-------

ef4ae63 [Tests] Silenced all deprecations in tests for 2.3
Merge branch '2.3' into 2.5

* 2.3:
  [Config] adds missing « use » statement for InvalidTypeException type hint in documentation.
  [Config] fixes broken unit test on ArrayNode class.
  fixed CS
  [Security] Delete old session on auth strategy migrate
  update required minimum TwigBridge version
  Very minor grammar fix in error message
  [Tests] Silenced all deprecations in tests for 2.3
  BinaryFileResponse - add missing newline
  fixed CS
  add a limit and a test to FlattenExceptionTest.
  CS: There should be no empty lines following phpdocs
  [FrameworkBundle] fix cache:clear command
  [2.3] Docblocks should not be followed by a blank line
  Fix return phpdoc
  [PropertyAccess] Added test to verify #5775 is fixed

Conflicts:
	src/Symfony/Bundle/TwigBundle/composer.json
	src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php
	src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php
Merge branch '2.5' into 2.6

* 2.5:
  [Config] adds missing « use » statement for InvalidTypeException type hint in documentation.
  [Config] fixes broken unit test on ArrayNode class.
  fixed CS
  [Security] Delete old session on auth strategy migrate
  update required minimum TwigBridge version
  Very minor grammar fix in error message
  [Tests] Silenced all deprecations in tests for 2.3
  BinaryFileResponse - add missing newline
  fixed CS
  add a limit and a test to FlattenExceptionTest.
  CS: There should be no empty lines following phpdocs
  [FrameworkBundle] fix cache:clear command
  [2.3] Docblocks should not be followed by a blank line
  Fix return phpdoc
  [PropertyAccess] Added test to verify #5775 is fixed
[2.3] CS And DocBlock Fixes
Merge branch '2.3' into 2.5

* 2.3:
  [2.3] CS And DocBlock Fixes
  [2.3] CS Fixes

Conflicts:
	src/Symfony/Bridge/Doctrine/Security/RememberMe/DoctrineTokenProvider.php
	src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
	src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
	src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php
	src/Symfony/Component/Config/Definition/ReferenceDumper.php
	src/Symfony/Component/Console/Application.php
	src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
	src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
	src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php
	src/Symfony/Component/Form/FormError.php
	src/Symfony/Component/HttpFoundation/Request.php
	src/Symfony/Component/HttpFoundation/Response.php
	src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php
	src/Symfony/Component/Process/ProcessUtils.php
	src/Symfony/Component/PropertyAccess/PropertyAccessor.php
	src/Symfony/Component/PropertyAccess/PropertyAccessorInterface.php
	src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
	src/Symfony/Component/Validator/Constraints/CardSchemeValidator.php
	src/Symfony/Component/Validator/Constraints/GroupSequence.php
	src/Symfony/Component/Validator/Mapping/ClassMetadata.php
	src/Symfony/Component/Validator/Mapping/ClassMetadataFactory.php
	src/Symfony/Component/Validator/Mapping/MemberMetadata.php
	src/Symfony/Component/Validator/Tests/Fixtures/StubGlobalExecutionContext.php
Merge branch '2.5' into 2.6

* 2.5:
  [2.3] CS And DocBlock Fixes
  [2.3] CS Fixes
  [FrameworkBundle] Fixed Translation loader and update translation command.
  [Console] remove « use » statement for PHP built-in exception classes.
  [SecurityBundle] adds unit tests suite for SecurityDataCollector class.

Conflicts:
	src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
	src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
	src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
	src/Symfony/Component/DependencyInjection/Dumper/YamlDumper.php
	src/Symfony/Component/Form/Form.php
	src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php
	src/Symfony/Component/OptionsResolver/Options.php
	src/Symfony/Component/OptionsResolver/OptionsResolver.php
	src/Symfony/Component/Process/ProcessPipes.php
	src/Symfony/Component/Stopwatch/Stopwatch.php
	src/Symfony/Component/Translation/Loader/XliffFileLoader.php
	src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php
Merge branch '2.6' into 2.7

* 2.6:
  [2.3] CS And DocBlock Fixes
  [2.3] CS Fixes
  [FrameworkBundle] Fixed Translation loader and update translation command.
  [Console] remove « use » statement for PHP built-in exception classes.
  [SecurityBundle] adds unit tests suite for SecurityDataCollector class.

Conflicts:
	src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
Merge branch '2.7'

* 2.7:
  [2.3] CS And DocBlock Fixes
  [Serializer] Serialization groups support
  [2.3] CS Fixes
  Fixed the issue 11116
  [Security] Fixed tests
  [Debug] use ternary operator to simplify the getClassLoader() method in DebugClassLoader class.
  [FrameworkBundle] Fixed Translation loader and update translation command.
  [Console] remove « use » statement for PHP built-in exception classes.
  [SecurityBundle] replaced deprecated SecurityContextInterface dependency by new TokenStorageInterface instance in SecurityDataCollector. Also added unit tests suite for SecurityDataCollector class.
  [SecurityBundle] use TokenStorageInterface instead of deprecated SecurityContextInterface in SecurityDataCollector and added unit tests suite.
  [SecurityBundle] adds unit tests suite for SecurityDataCollector class.
  [Serializer] Add xml_format_output context option. Close #12517.
  [WebProfilerBundle] Fixed IE8 support