* BGPm for 201811 (#3601)
* Feature is downported
* Add monitors to the test minigraphs
* Test
* No pfx filer
* Fix bgp sample
* Quagga requires to activate peer-group before configuration
* Add bgpcfgd and bgpd.peer template
* Catch exception if rendering external template
* Fix tests
* [cfggen] Support reading from and writing to configdb
* [bgp] Move bgp_admin_state to configdb, support dynamic admin state change
* [sonic-utilities] Adapt configDB for admin status, support config save and config load