zfs: merge OpenZFS master-bedbc13da
Notable upstream commits:
8e43fa12c Fix vdev_rebuild_thread deadlock 03ef8f09e Add missing checks for unsupported features 2e160dee9 Fix assert in FreeBSD-specific dmu_read_pages bedbc13da Cancel TRIM / initialize on FAULTED non-writeable vdevs
Obtained from: OpenZFS
(cherry picked from commit caed7b1c399de04279822028e15b36367e84232f)