nfs41: allow LD to choose DS connection version/minor_version

flexfile layout may need to set such when making DS connections.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 7332ba1..5543850 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -190,6 +190,7 @@
 					     int ds_addrlen, int ds_proto,
 					     unsigned int ds_timeo,
 					     unsigned int ds_retrans,
+					     u32 minor_version,
 					     rpc_authflavor_t au_flavor);
 extern struct rpc_clnt *nfs4_find_or_create_ds_client(struct nfs_client *,
 						struct inode *);