branch: b1_6

set msghdr flags right before rpc sent out.
b=15487
r=rread
r=shadow

lustre/ptlrpc/client.c

@@ -547,7 +547,6 @@ ptlrpc_prep_req_pool(struct obd_import *imp, __u32 version, int opcode,
         atomic_set(&request->rq_refcount, 1);
 
         lustre_msg_set_opc(request->rq_reqmsg, opcode);
-        lustre_msghdr_set_flags(request->rq_reqmsg, imp->imp_msghdr_flags);
 
         RETURN(request);
 }

lustre/ptlrpc/niobuf.c

@@ -474,6 +474,8 @@ int ptl_send_rpc(struct ptlrpc_request *request, int noreply)
         lustre_msg_set_type(request->rq_reqmsg, PTL_RPC_MSG_REQUEST);
         lustre_msg_set_conn_cnt(request->rq_reqmsg,
                                 request->rq_import->imp_conn_cnt);
+        lustre_msghdr_set_flags(request->rq_reqmsg,
+                                request->rq_import->imp_msghdr_flags);
 
         if (!noreply) {
                 LASSERT (request->rq_replen != 0);