MPLS Unifom mode

- support both pipe and uniform modes for all MPLS LSP
- all API programming for output-labels requires that the mode (and associated data) is specificed
   - API changes in MPLS, BIER and IP are involved
- new DPO [sub] types for MPLS labels to handle the two modes.

Change-Id: I87b76401e996f10dfbdbe4552ff6b19af958783c
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/fib/fib_path.h b/src/vnet/fib/fib_path.h
index 70b2f50..28ec10a 100644
--- a/src/vnet/fib/fib_path.h
+++ b/src/vnet/fib/fib_path.h
@@ -159,6 +159,7 @@
     load_balance_path_t *hash_key);
 extern void fib_path_stack_mpls_disp(fib_node_index_t path_index,
                                      dpo_proto_t payload_proto,
+                                     fib_mpls_lsp_mode_t mode,
                                      dpo_id_t *dpo);
 extern void fib_path_contribute_forwarding(fib_node_index_t path_index,
 					   fib_forward_chain_type_t type,