Capability to terminate or suspend or leave additional VMs running

Right now we have a checkbox "Stop on Terminate" in build environment section under "JClouds Instance Creation". I replaced it with radio group allowing to select one of 3 options: terminate instance (default), suspend instance and leave instance running. The first two options existed before. The use case for the third one is the following: we're using the plugin to dynamically prepare testing virtual machines. What we need when build is finished is that VM should remain running and the user is intended to terminate instances manually.