net-snmp security and bug fix update

[1:5.7.2-24]

• Fixed lmSensorsTable not reporting sensors with duplicate names
  (#1252053)
• Fixed close() overhead of extend commands (#1252048)
• Fixed out-of-bounds write in python code (#1252034)
  [1:5.7.2-23]
• Fixed parsing of invalid variables in incoming packets (#1248414)
• Fixed HOST-RESOURCES-MIB::hrFSAccess flag when read-only filesystem
  becomes writable (#1241897)
  [1:5.7.2-22]
• Fixed IP-MIB::ipSystemStatsInOctets and similar counters for IPv4
  (#1235697)
  [1:5.7.2-21]
• Fixed crash on reloading ‘exec’ configuration options (#1228893)
• Fixed CVE-2014-3565, snmptrapd died when parsing certain traps (#1209361)
• Fixed storageUseNFS functionality in hrStorageTable (#1193006)
• Fixed forwarding of traps with RequestID=0 in snmptrapd (#1192511)
• Fixed hrStorageTable to contain 31 bits integers (#1192221)
• Fixed ‘clientaddr’ option for UDPv6 client messages (#1190679)
• Fixed log level of SMUX messages (#1189393)
• Fixed UDP-MIB::udpTable index on big-endian platforms (#1184433)
• Fixed client utilities reporting ‘read_config_store open failure on
  /var/lib/net-snmp/snmpapp.conf’ (#1151310)
• Fixed snmpd crash when failed to parse SMUX message headers (#1140236)
• Added ‘diskio’ option to snmpd.conf, it’s possible to monitor only
  selected devices in diskIOTable (#1092308)