QA:EXT 4 fs migration

= Description = | Ext 4 fs migration from ext3

= How to test = |
 * 1) Boot the F10 installer
 * 2) Do a default install to ext3
 * 3) complete installation
 * 4) reboot into post-install system and complete firstboot etc
 * 5) Boot the F11 installer with the   boot option
 * 6) Upgrade the system and answer yes to the migration question
 * 7) complete upgrade
 * 8) reboot into post-install system
 * 9) run
 * 10)   files which have been upgraded
 * 11) reboot to rescue mode and run   on root filesystem

= Expected Results = |
 * 1) installation completes successfully
 * 2) post-installation system boots
 * 3) upgrade completes successfully
 * 4) post-upgrade system boots
 * 5) post-upgrade system is functional
 * 6) post-upgrade system has old ext3 root mounted as ext4
 * 7) post-upgrade system shows "extents" in tune2fs output for root ext4 fs
 * 8) post-upgrade new files show -e- in lsattr output
 * 9) post-upgrade root filesystem fscks cleanly