xshell-plugin appears only in the drop-down list of normal build steps.
I want to run a script via xshell-plugin as a conditional build step but it doesn't register itself with conditional-buildstep so isn't available in the list there;
Likewise I want to run an xshell script as a post-build action (so it doesn't affect the build status) but it isn't available in the list of available Post-Build Actions;
Also I want to run it as a conditional post-build action (via flexible-publish-plugin) but it doesn't appear in the list of available actions there either.