NVMe plugin backport

Rebase to the latest upstream release 2.28
Add dependency on device-mapper-multipath to libblockdev-mpath
Fix spec issues found by rpminspect

tests: Fix expected extended partition flags with new parted
mdraid: Fix copy-paste error when checking return value

Fix getting UUID for DDF containers

tests: Lower expected free space on newly created Ext filesystems

tests: Wait for raid and mirrored LVs to be synced before removing
spec: Require the same version of utils for lvm-devel and lvm-dbus-devel

Fix reading statistics for VDO pools with VDO 8
vdo_stats: Default to 100 % savings for invalid savings values
Add support for creating and unlocking standalone integrity devices

Fix patch for 'Add support LVM devices file management'

Add support LVM devices file management

Rebuilt for IMA sigs, glibc 2.34, aarch64 flags

Add workarounds for some LVM test issues
Adapt tests to xfsprogs 5.12 changes

Adapt to dosfstools 4.2 changes

Memory leaks fixes backport
Fix default key size for non XTS ciphers

Rebuilt for RHEL 9 BETA on Apr 15th 2021. Related: rhbz#1947937

Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild

loop: Retry LOOP_SET_STATUS64 on EAGAIN (vtrefny)
Fix max size limit for LVM thinpool metadata (vtrefny)
lvm: Use the UNUSED macro instead of __attribute__((unused)) (vtrefny)
lvm: Do not use thin_metadata_size to recommend thin metadata size (vtrefny)
lvm: Set thin metadata limits to match limits LVM uses in lvcreate (vtrefny)
Mark all GIR file constants as guint64 (vtrefny)
fs: Fix compile error in ext_repair caused by cherry pick from master (vtrefny)
README: Use CI status image for 2.x-branch on 2.x (vtrefny)
fs: Do not report error when errors were fixed by e2fsck (vtrefny)
tests: Add null-byte exec tests (tbzatek)
tests: Add bufferbloat exec tests (tbzatek)
exec: Clarify the BDUtilsProgExtract callback documentation (tbzatek)
exec: Use non-blocking read and process the buffer manually (tbzatek)
exec: Fix polling for stdout and stderr (tbzatek)
exec: Fix setting locale for util calls (vtrefny)