Uping version to v1beta15
[google|compute] Change default image to most recent version of wheezy.
trying to fix sshable? for gce
more attempts to get ssh in compute workings.
temporary debug info.
[openvz] Fixes #1871 test helper callback

This moves the setting up of an `at_exit` callback from when the file
is required to when the matching helper is used.

This prevents it failing on any run where OpenVZ is excluded.
Add SimpleCov and Coveralls.io dependenices
Add rake tasks for travis, which include publishing coverage reports.
Change travis to use a rake task instead of shindont directly.
This is partly necessary for
https://github.com/lemurheavy/coveralls-ruby/pull/20, though
I'm a fan of running just "rake" or "rake travis" for simplicity
anyways.
The actual simplecov/coveralls setup.
The use of Process.pid is an attempt to avoid confusing SimpleCov when
running tests in parallel.  Other tests frameworks take a similar
approach when they detect parallel_tests.
Better comments and a logging attempt.
bug in network interfaces code.
Merge branch 'master' into next_version
Trying to be more consistent in code. Removing logging.
trying to get metadata do one request per access
Forgot to delete two lines.
correct syntax for the metadata craziness
I'm an idiot.
trying again to get metadata working...
Hashes not Arrays
ahh machine api changed as well... gotta figure out what the api is returning now.