Rundeck Rundeck Development

Right now, all jobs that are kicked off using the "run" command line tool are treated and logged as if they are executed by "admin" (or more specifically, the value of framework.server.username).

This means that command line users have access to all jobs all the time and their executions are not specifically logged as being from them.

We need a mechanism that allows the unix user to be passed to the rundeck server process so that:

1. aclpolicy can limit the jobs that the unix user can do.
   
2. the user can be logged in the rundeck database as the executor of the job.

This assumes a direct mapping between unix users and rundeck users (for example if they authenticated from the same source); it would be nice not to require a password in this case.

We should also have a way to pass any arbitrary username/password for the same kind of purposes; this could be configured locally per account (perhaps via environment variable); see #247 for a related issue.