Add requirement for beaker-abs in Gemfile, add puppet_test_env group (#476)
Add requirement for beaker-abs in Gemfile, add puppet_test_env group (#476)

This commit does two things:

1. Adds the beaker-abs gem in to the gemfile (this gem is another required gem
for working in the test environment at Puppet.)

2. Adds a puppet_test_env group to the gemfile, to allow users at puppet to
test with the beaker-abs gem and the users at cisco to install gems without it
if necessary.
mikewiebe/cisco-network-puppet-module,cisco/cisco-network-puppet-module,mikewiebe/cisco-network-puppet-module,mikewiebe/cisco-network-puppet-module,cisco/cisco-network-puppet-module,cisco/cisco-network-puppet-module,mikewiebe/cisco-network-puppet-module,cisco/cisco-network-puppet-module