Use puppetlabs_spec_helper for testing

[jlyheden]

This change allows the spec tests to execute locally at least

[arioch]

Doesn't quite fix it just yet...

0.15s$ rake spec
rake aborted!
LoadError: cannot load such file -- puppetlabs_spec_helper/rake_tasks
/home/travis/build/arioch/puppet-redis/Rakefile:2:in `<top (required)>'
/home/travis/.rvm/gems/ruby-1.9.3-p551/bin/ruby_executable_hooks:15:in `eval'
/home/travis/.rvm/gems/ruby-1.9.3-p551/bin/ruby_executable_hooks:15:in `<main>'
(See full trace by running task with --trace)
The command "rake spec" exited with 1.

[jlyheden]

Seem to be travis config related, looks like it isn't running rake via bundler, lets see if the latest commit fixes it...

[arioch]

Looking good now.
Merged. 👍