pybind/rados: add note for reversed arguments to WriteOp.zero()

Signed-off-by: Wang Chao <[email protected]>

Author: Sean10

PendingReleaseNotes

@@ -47,6 +47,10 @@
   fuse client for `fallocate` for the default case (i.e. mode == 0) since
   CephFS does not support disk space reservation. The only flags supported are
   `FALLOC_FL_KEEP_SIZE` and `FALLOC_FL_PUNCH_HOLE`.
+* pybind/rados: Fixes WriteOp.zero() in the original reversed order of arguments
+  `offset` and `length`. When pybind calls WriteOp.zero(), the argument passed
+  does not match rados_write_op_zero, and offset and length are swapped, which
+  results in an unexpected response.
 
 >=19.0.0