Backport patches related with iotest from upstream
* Patches added:
block-backend-Retain-permissions-after-m.patch
iotest-065-explicit-compression-type.patch
iotest-214-explicit-compression-type.patch
iotest-302-use-img_info_log-helper.patch
iotest-303-explicit-compression-type.patch
iotest-39-use-_qcow2_dump_header.patch
iotests-60-more-accurate-set-dirty-bit-i.patch
iotests-bash-tests-filter-compression-ty.patch
iotests-common.rc-introduce-_qcow2_dump_.patch
iotests-declare-lack-of-support-for-comp.patch
iotests-drop-qemu_img_verbose-helper.patch
iotests-massive-use-_qcow2_dump_header.patch
iotests-MRCE-Write-data-to-source.patch
iotests.py-filter-out-successful-output-.patch
iotests.py-img_info_log-rename-imgopts-a.patch
iotests.py-implement-unsupported_imgopts.patch
iotests.py-qemu_img-create-support-IMGOP.patch
iotests.py-rewrite-default-luks-support-.patch
iotests-specify-some-unsupported_imgopts.patch
qcow2-simple-case-support-for-downgradin.patch
tests-qemu-iotests-Fix-051-for-binaries-.patch