Add sequence number

[yuangezhizao]

BGP-LS Attribute Sequence-Number TLV

Reference：draft-ietf-lsvr-bgp-spf-31.html#section-5.2.4

[yuangezhizao]

It seems that there is a misunderstanding. The sequence number that is needed is the one in openbmp.

MESSAGE_BUS_API.md#object-collector-openbmpparsedcollector