Add knife ec2 eip list command
Add knife ec2 eip list command

This lets us find the network interface IDs we need when using knife ec2 server create

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

chef/knife-ec2,ClogenyTechnologies/knife-ec2,MsysTechnologiesllc/knife-ec2,MsysTechnologiesllc/knife-ec2,chef/knife-ec2