Changes for cleaner tests

[JustinKyleJames]

Figure out how to do the following and update the test cases with this to make them cleaner to read/understand. I don't know if any of this add to the functionality of test except possibly the non-anonymous ftp.

• Set up certificates so that globus-url-copy can be run against the non-priveleged user, user1. This can replace some of the FTP tests. One possibility would be to update the grid-mapfile and restart the server although there may be alternatives.
• Figure out how to set it up to do FTP without anonymous FTP.
• Enhance the framework to be able to run icommands against user1. This will allow simpler setup/teardown when testing against user1.

[JustinKyleJames]

I've handled the first bullet and it is included in pull request #89.