* env var checks should be done in main.py ([d0a2da7](https://github.com/model-driven-devops/nso-oc-services/commit/d0a2da7bad06b51b51adcfb5c3de1e1a54fc2ec2))
* bgp address family only for MP-BGP, imports, don't remove BGP ASN ([6371a3b](https://github.com/model-driven-devops/nso-oc-services/commit/6371a3b865049e36ddd658946b7122f273185d59))