RFE: run btrfs xfstests

Hi. I notice the CKI reports on kernel@lists.fedoraproject.org and see that ext4 and xfs xfstests are being run, but not btrfs tests. Since Btrfs is supported in Fedora at installation time for root, and is also a release blocking file system, request to also run the Btrfs tests. Thanks!

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information