openmediavault-mergerfs 6.2 removing fstab option and migrating existing pools to systemd mounts

I have been saying for months that the fstab option would be removed. As the title says, if you install this update, your pool config will be automatically migrated to systemd mounts (fstab disabled). The actual pool change won't happen until you click to apply the changes on the apply banner (fstab and mergerfs marked dirty by the upgrade).