Add 'git-bitbucket' in RepositoryFactory

Add 'git-bitbucket' and 'hg-bitbucket' in RepositoryFactory help to call good driver in vcs
Cause if you config your repository type with 'git'. the GitDriver is instantiate and not GitBitbucketDriver

Fix #5389

src/Composer/Repository/RepositoryFactory.php

@@ -119,12 +119,14 @@ class RepositoryFactory
         $rm->setRepositoryClass('package', 'Composer\Repository\PackageRepository');
         $rm->setRepositoryClass('pear', 'Composer\Repository\PearRepository');
         $rm->setRepositoryClass('git', 'Composer\Repository\VcsRepository');
+        $rm->setRepositoryClass('git-bitbucket', 'Composer\Repository\VcsRepository');
         $rm->setRepositoryClass('github', 'Composer\Repository\VcsRepository');
         $rm->setRepositoryClass('gitlab', 'Composer\Repository\VcsRepository');
         $rm->setRepositoryClass('svn', 'Composer\Repository\VcsRepository');
         $rm->setRepositoryClass('fossil', 'Composer\Repository\VcsRepository');
         $rm->setRepositoryClass('perforce', 'Composer\Repository\VcsRepository');
         $rm->setRepositoryClass('hg', 'Composer\Repository\VcsRepository');
+        $rm->setRepositoryClass('hg-bitbucket', 'Composer\Repository\VcsRepository');
         $rm->setRepositoryClass('artifact', 'Composer\Repository\ArtifactRepository');
         $rm->setRepositoryClass('path', 'Composer\Repository\PathRepository');