nfs3: Return ESTALE when going beyond fh-hashcount or max-hashes
nfs3: Return ESTALE when going beyond fh-hashcount or max-hashes

During fh resolution, if we go beyond the max hashes support by
gnfs or if we go beyond the dir depth specified in the filehandle,
then return ESTALE.

Signed-off-by: Shehjar Tikoo <shehjart@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>

BUG: 1378 (Deep directory creation crashes gnfs)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1378

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster