bgpd: snmp MIB bg4v2 fix wrong type values

bgpd: snmp MIB bg4v2 fix wrong type values

snmpwalk exhibit the followinfg errors:

BGP4V2-MIB::bgp4V2PeerLastErrorReceivedTime.1.ipv6z.10.125.0.2 = Wrong Type (should be Timeticks): Gauge32: 0
BGP4V2-MIB::bgp4V2PeerLastErrorReceivedTime.2.dns.253.0.1.37.0.0.0.0.0.0.0.0.0.0.0.3 = Wrong Type (should be Timeticks): Hex-STRING: 00 00 00 00 00 00 00 00
BGP4V2-MIB::bgp4V2PeerLastErrorSentTime.1.ipv6z.10.125.0.2 = Wrong Type (should be Timeticks): Gauge32: 178
BGP4V2-MIB::bgp4V2PeerLastErrorSentTime.2.dns.253.0.1.37.0.0.0.0.0.0.0.0.0.0.0.3 = Wrong Type (should be Timeticks): Hex-STRING: B2 00 00 00 00 00 00 00
Error: OID not increasing: BGP4V2-MIB::bgp4V2NlriIndex.1.4.10.200."".0.24.10.125.0.2
 >= BGP4V2-MIB::bgp4V2NlriIndex.1.4.10.200."".0.24."".0.0.0

draft-ietf-idr-bgp4-mibv2-11 states the following

bgp4V2PeerLastErrorReceivedTime OBJECT-TYPE
    SYNTAX     TimeStamp
bgp4V2PeerLastErrorSentTime OBJECT-TYPE
    SYNTAX     TimeStamp

we set the correct values

Signed-off-by: Francois Dumontet <francois.dumontet@6wind.com>