As we need to monitor vpn connection detailes, the only way to config vpnaas to log states and connections of vpn
is to provide own templates for VPNaaS configuration. With that we enable deployers to provide custom configuration
files for using with any vpn drivers (stronswan/openswan).
Co-Authored-By: Dmitriy Rabotyagov <noonedeadpunk@gmail.com>
Change-Id: I54dbd5c9690281af475312a277eab534403edf92