tipc: support 128bit node identity for peer removing

tipc: support 128bit node identity for peer removing

Problem:
In kernel upstream, we add the support to set node identity with
128bit. However, we are still using legacy format in command tipc
peer removing. Then, we got a problem when trying to remove
offline node i.e:

$ tipc node list
Node Identity                    Hash     State
d6babc1c1c6d                     1cbcd7ca down

$ tipc peer remove address d6babc1c1c6d
invalid network address, syntax: Z.C.N
error: No such device or address

Solution:
We add the support to remove a specific node down with 128bit
node identifier, as an alternative to legacy 32-bit node address.

Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Huu Le <hoang.h.le@dektech.com.au>
Signed-off-by: David Ahern <dsahern@gmail.com>