bug #3124 Make SUCCESS and FAILURE public for Symfony 5.1 (tacman)
bug #3124 Make SUCCESS and FAILURE public for Symfony 5.1 (tacman)

This PR was merged into the 3.0.x-dev branch.

Discussion
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Make SUCCESS and FAILURE public for Symfony 5.1

Installing easyadmin in the Symfony 5.1 framework fails.
```
!!  PHP Fatal error:  Access level to EasyCorp\Bundle\EasyAdminBundle\Command\MakeAdminMigrationCommand::SUCCESS must be public (as in class Symfony\Component\Console\Command\Command) in /home/tac/formeo-demo/vendor/easycorp/easyadmin-bundle/src/Command/MakeAdminMigrationCommand.php on line 134
!!  Symfony\Component\ErrorHandler\Error\FatalError {#480
!!    -error: array:4 [
!!      "type" => 64
!!      "message" => "Access level to EasyCorp\Bundle\EasyAdminBundle\Command\MakeAdminMigrationCommand::SUCCESS must be public (as in class Symfony\Component\Console\Command\Command)"
!!      "file" => "/home/tac/formeo-demo/vendor/easycorp/easyadmin-bundle/src/Command/MakeAdminMigrationCommand.php"
!!      "line" => 134
!!    ]
!!    #message: "Compile Error: Access level to EasyCorp\Bundle\EasyAdminBundle\Command\MakeAdminMigrationCommand::SUCCESS must be public (as in class Symfony\Component\Console\Command\Command)"
!!    #code: 0
!!    #file: "./vendor/easycorp/easyadmin-bundle/src/Command/MakeAdminMigrationCommand.php"
!!    #line: 134
!!  }
```

Commits
-------

465da544 Make SUCCESS and FAILURE public for Symfony 5.1

javiereguiluz/EasyAdminBundle,javiereguiluz/EasyAdminBundle