Merge tag 'pull-block-2022-04-25' of https://gitlab.com/hreitz/qemu into staging

Merge tag 'pull-block-2022-04-25' of https://gitlab.com/hreitz/qemu into staging

Block patches:
- New @force parameter for blockdev-change-medium
- Improvements to the iotests to help with debugging
- Fix iotest 108 on systems without user_allow_other in fuse.conf

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* tag 'pull-block-2022-04-25' of https://gitlab.com/hreitz/qemu:
  iotests/108: Fix when missing user_allow_other
  iotests: make qemu_io_log() check return codes by default
  iotests: remove qemu_io_silent() and qemu_io_silent_check().
  iotests: remove qemu_io_pipe_and_status()
  iotests/image-fleecing: switch to qemu_io()
  iotests/migration-permissions: use assertRaises() for qemu_io() negative test
  iotests: rebase qemu_io() on top of qemu_tool()
  iotests: create generic qemu_tool() function
  iotests/040: Fix TestCommitWithFilters test
  iotests/040: Don't check image pattern on zero-length image
  iotests: Don't check qemu_io() output for specific error strings
  iotests/163: Fix broken qemu-io invocation
  iotests: replace calls to log(qemu_io(...)) with qemu_io_log()
  block: add 'force' parameter to 'blockdev-change-medium' command

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>