Adding missing sudo calls to busser

[adamhjk]

When running with a strict umask (0027 or 0077) busser failed to
work, because parts of the pipeline were not actually being run
as root. This patch fixes that. :)

Also - super clever base64 test injection hack. Why not re-use your SCP stuff to a temp directory, though, and simply move them into place?

[fnichol]

Oh you found this little nasty…

The initial goal (a long time ago) was to try and transfer the testing files and issue the busser test command within 1 SSH session to avoid those reverse DNS/SSH slowdowns that can happen.

Since then I've been wondering if net/scp can use an open net/ssh channel to transfer the files before the command is issued. Think that's possible? Getting rid of this code eliminates the line count (and complexity) in this project and busser.

As an aside, Ruby's standard library is great for allowing you to do these crazy things with no further dependencies 😸