automatically convert id to int based on prefix, so that vxlan IDs can be specified in hex with 0x
automatically convert id to int based on prefix, so that vxlan IDs can be specified in hex with 0x

TrilliumIT/docker-vxlan-plugin,clinta/docker-vxlan-plugin,TrilliumIT/docker-drouter,TrilliumIT/docker-drouter,TrilliumIT/docker-vxlan-plugin,clinta/docker-vxlan-plugin