NFSD: Put cache get-reqs dump attrs under reply

NFSD: Put cache get-reqs dump attrs under reply

The new get-reqs dump operations added to sunrpc_cache.yaml and
nfsd.yaml place the "requests" nested attribute under dump.request.
A netlink dump carries an empty request; its payload travels back
in the reply. Because the spec names no reply attributes, the YNL
C code generator synthesizes a forward reference to a
<op>_rsp struct that is never defined, breaking any consumer of
these specs.

This first surfaced when Thorsten Leemhuis built tools/net/ynl
against -next:

  nfsd-user.h:746: error: field 'obj' has incomplete type
    struct nfsd_svc_export_get_reqs_rsp obj ...
  nfsd-user.h:826: error: field 'obj' has incomplete type
    struct nfsd_expkey_get_reqs_rsp obj ...
  nfsd-user.c:1211: error: 'nfsd_svc_export_get_reqs_rsp_parse'
    undeclared

sunrpc_cache.yaml has the same defect in ip-map-get-reqs and
unix-gid-get-reqs, but nfsd.yaml errors out first in the Makefile's
alphabetical build order and hides the sunrpc failures.

These bugs were introduced by incorrect merge conflict resolution.

Reported-by: Thorsten Leemhuis <linux@leemhuis.info>
Closes: https://lore.kernel.org/linux-nfs/f6a3ca6d-e5cb-4a5c-9af2-8d2b1ce33ef0@leemhuis.info/
Fixes: 1045ccf519ce30 ("sunrpc: add netlink upcall for the auth.unix.ip cache")
Tested-by: Thorsten Leemhuis <linux@leemhuis.info>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>