CreateTfsRemote() should return a GitTfsRemote authenticated
Merge pull request #289 from pmiossec/fix_create_tfs_remote

CreateTfsRemote() should return a GitTfsRemote authenticated
Preserve merges when rebasing in `pull` command
Merge pull request #290 from pmiossec/preserve_merge_rebase

Preserve merges when rebasing in `pull` command