add tests for ssh_connect_host with --associate-eip and --associate-public-ip
add tests for ssh_connect_host with --associate-eip and --associate-public-ip

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