make unit tests compatible with Jenkins 2.307+ (#653)
make unit tests compatible with Jenkins 2.307+ (#653)


jenkinsci/ec2-plugin,mkozell/ec2-plugin,mkozell/ec2-plugin,jenkinsci/ec2-plugin,mkozell/ec2-plugin,mkozell/ec2-plugin,jenkinsci/ec2-plugin,jenkinsci/ec2-plugin