[maven-release-plugin] prepare release ec2-1.59
[maven-release-plugin] prepare release ec2-1.59

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