qa: Add workunit that hangs for manual thrasher testing

Signed-off-by: David Zafman <david.zafman@inktank.com>
test: Fix valgrind found "Mismatched free() / delete / delete []"

Use delete[] in set_argv() so that valgrind runs clean

Signed-off-by: David Zafman <david.zafman@inktank.com>
osdc: Add asserts that client_lock is held

Clarify locking by indicating that client_lock is held

Signed-off-by: David Zafman <david.zafman@inktank.com>
osdc: deleted op left in check_lastest_map_ops

Erase check_latest_map_ops entry in Objecter::finish_op()

bug: #5784

Signed-off-by: David Zafman <david.zafman@inktank.com>