Fix contrail-topology and contrail-snmp-collector configs

Starting from Contrail 4.1, cfg sections API_SERVER and KEYSTONE are
deprecated and removed, section CONFIGDB is added instead.
Corresponding CR in upstream:
https://github.com/Juniper/contrail-controller/commit/eb5cf95db5b1dd8f45544aeaa98cadfda304a3a7

Change-Id: I770bfe8806c8cf1a350216e946bb16eb80880dac
Closes-Prod: PROD-32926
2 files changed