minor #8984 [console testing] commands are automatically registered in symfony full stack (dbu)

This PR was merged into the 4.0 branch.

Discussion
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[console testing] commands are automatically registered in symfony full stack

the FrameworkBundle console application should have the commands automatically registered. adding it manually will hide setup problems with commands.

Commits
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605150a commands are automatically registered in symfony full stack

Author: javiereguiluz

console.rst

@@ -299,7 +299,6 @@ you can extend your test from
             $kernel->boot();
 
             $application = new Application($kernel);
-            $application->add(new CreateUserCommand());
 
             $command = $application->find('app:create-user');
             $commandTester = new CommandTester($command);