Configuration agent for Cisco service VMs

Specification for a configuration agent for configuring services
inside Cisco service VMs (like CSR1kv). This blueprint
targets the current L3 routing and NAT service.

cisco-config-agent

Change-Id: I532c4486ff3f49a2fb48dff116dd5c4e456d2a0c
Merge "Configuration agent for Cisco service VMs"