Now it's possible to add and remove peers based on ConfigDB
- What I did
Fixed functionality for dynamically adding/removing static bgp peers.
- How I did it
Split the bgp default template on bgp part and bgp peer part
Changed bgpcfgd to use 1.
- How to verify it
Build an image and run on your DUT
* [docker-fpm-frr]: Generate separated staticd.conf for staticd
Generate staticd.conf by templates/staticd.conf.j2 with config DB data
* [docker-fpm-frr]: Remove default_route block from zebra.conf.j2
default_route block already moved to staticd.conf.j2
* [docker-fpm-frr]: Add test for staticd.conf.j2 template
* Add test for staticd.conf.j2 template
* Correct the sample output of zebra.conf.j2 template
* Fix a typo in test_zebra_frr
* [docker-fpm-frr]: Fix test_j2files test errors
* Fix test errors in test_j2files.py and test_j2files_t2_chassis_fe.py
* Fix typo in test_j2files_t2_chassis_fe.py
