NFSD: Set the attributes used to store the verifier for EXCLUSIVE4_1

NFSD: Set the attributes used to store the verifier for EXCLUSIVE4_1

According to rfc5661 18.16.4,
"If EXCLUSIVE4_1 was used, the client determines the attributes
 used for the verifier by comparing attrset with cva_attrs.attrmask;"

So, EXCLUSIVE4_1 also needs those bitmask used to store the verifier.

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Orabug: 29204157

(cherry picked from commit ead8fb8c24411722b92198b3dccd102a76cdd050)
Signed-off-by: Calum Mackay <calum.mackay@oracle.com>
Reviewed-by: Bill Baker <Bill.Baker@oracle.com>
Signed-off-by: Brian Maly <brian.maly@oracle.com>