Merge tag 'for-upstream' of git://repo.or.cz/qemu/kevin into staging

Block layer patches

- coroutine: Fix crashes due to too large pool batch size
- fdc: Prevent end-of-track overrun
- nbd: MULTI_CONN for shared writable exports
- iotests test runner improvements

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* tag 'for-upstream' of git://repo.or.cz/qemu/kevin:
  qemu-iotests: inline common.config into common.rc
  nbd/server: Allow MULTI_CONN for shared writable exports
  qemu-nbd: Pass max connections to blockdev layer
  tests/qtest/fdc-test: Add a regression test for CVE-2021-3507
  hw/block/fdc: Prevent end-of-track overrun (CVE-2021-3507)
  .gitlab-ci.d: export meson testlog.txt as an artifact
  tests/qemu-iotests: print intent to run a test in TAP mode
  iotests/testrunner: Flush after run_test()
  coroutine: Revert to constant batch size
  coroutine: Rename qemu_coroutine_inc/dec_pool_size()

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