2018-05-24: changed counters to 1/s
2018-05-25: a lot of code cleanup
            packet name changed from cisco_bgp to cisco_bgp_peer
            added support of more then one address family per peer
            (changed item from remoteip to remoteip+familyname, rewrite of parer, inventory and check function)
2018-05-27: changed scan function from  '.1.3.6.1.4.1.9.9.187.1.2.7.1.3.* to sysdecr contains cisco
2018-05-28: changed wato, added peer alias, state if not found, infotext values
2018-05-29: fixed longoutpout (removed not configured)
2018-11-02: modified scanfunction (from "find 'cisco' =-1"  to "'cisco' in OID"
2019-18-02: added fix for empty values ("" instead of "0") sugested by Laurent Barbier (lbarbier[at]arkane-studios[dot]com)
2020-02-24: added workaround for missing cbgpPeer2AddrFamily (example L2VPN EVPN peers, Fix for jonale82[at]gmail[dot]com)
2020-03-02: changed handling of perfdata, add only data the are really there (not None) instead of setting them to 0
2020-09-10: fixed typo in metrics file. FMS --> FSM (thanks martin[dot]pechstein[at]posteo[dot]de)
2020-06-04: code cleanup --> changed isdigit test to try/except loop, changed peer.get test to try/except loop
2021-03-27: rewrite for CMK2.0
2021-03-28: added warning for missing prefix limit/warn threshold
2021-07-08: fixed handling of missing prefix limit/accepted prefixes/warn threshold. thanks to Florian[dot]Dille[at]<redacted>[dot]com
2021-07-13: fixed handling of perfdata (in/out updates, in/out total messages). thanks to Florian[dot]Dille[at]<redacted>[dot]com and timhor[at]outlook[dot]com
            added type hinting for parsed data (section)
            optimised data handling in check function (add prefixes to peer info)
            made default state if item not found configurable via WATO
2021-07-21: fixed missing oid_end in parse function, thanks to oliverj@cmkforum
2021-08-18: fixed counter rollover, changed detect section to find only BGP enabled devices.
2012-08-20: cleanup, optimized parse function
2021-08-22: added WATO option for admin state down
2021-08-23: changed service name from "Cisco BGP peer" to "BGP peer" --> streamline with bgp_peer
            get localas from BGP-4-MIB::bgpLocalAs if CISCO-BGP4-MIB::cbgpPeer2LocalAs not set
2021-08-29: fixed bgpLocalAs in BGP-4-MIB not set
2021-11-08: moved helper functions to utils/bgp_peer
            moved longoutput/details to inventory based on inv_bgp_beer
            merged WATO with bgp_peer
            merged METRICS with bgp_peer
2021-11-13: fix for mixed peers (with and without prefixes on one host)
2021-11-14: merged check function with bgp_peer
            merged parse function with bgp_peer
            added basic support for VRFs (cbgpPeer3Entry)
2022-04-26: moved inventory to inv_cisco_bgp_beer
2022-04-30: code cleanup
2022-05-09: added item to BgpPeer class, this is used in the discovery function
2022-05-11: changed bgp_get_peer_entry to get proper parameters instead of Nontransparent list
            added remote_as to BgpPeerItem