test-block-iothread: Lock AioContext for blk_insert_bs()

blk_insert_bs() requires that callers hold the AioContext lock for the
node that should be inserted. Take it.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230605085711.21261-4-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
1 file changed