Add Panopoly detection

[nhoag]

Error:

/lib/onboard/core.rb:53:in `info': undefined method `scan' for nil:NilClass (NoMethodError)

Print statement:

 47     def info
 48       core = {}
 49       i = collector
 50       puts collector
 51       exit
{"distro"=>"drupal", "drupal"=>nil, "pressflow"=>nil}

Panopoly version info:

grep -rni panopoly ./docroot | grep version
./docroot/profiles/panopoly/build-panopoly-pantheon.make:12:projects[panopoly][version] = 1.1
./docroot/profiles/panopoly/build-panopoly-release.make:9:projects[panopoly][version] = 1.0
./docroot/profiles/panopoly/build-panopoly.make:9:projects[panopoly][version] = 1.1
./docroot/profiles/panopoly/drupal-org-dev.make:6:projects[panopoly_core][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-dev.make:11:projects[panopoly_images][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-dev.make:16:projects[panopoly_theme][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-dev.make:21:projects[panopoly_magic][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-dev.make:26:projects[panopoly_widgets][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-dev.make:31:projects[panopoly_admin][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-dev.make:36:projects[panopoly_users][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-dev.make:43:projects[panopoly_pages][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-dev.make:48:projects[panopoly_wysiwyg][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-dev.make:53:projects[panopoly_search][version] = 1.x-dev
./docroot/profiles/panopoly/drupal-org-release.make:6:projects[panopoly_core][version] = 1.1
./docroot/profiles/panopoly/drupal-org-release.make:9:projects[panopoly_images][version] = 1.1
./docroot/profiles/panopoly/drupal-org-release.make:12:projects[panopoly_theme][version] = 1.1
./docroot/profiles/panopoly/drupal-org-release.make:15:projects[panopoly_magic][version] = 1.1
./docroot/profiles/panopoly/drupal-org-release.make:18:projects[panopoly_widgets][version] = 1.1
./docroot/profiles/panopoly/drupal-org-release.make:21:projects[panopoly_admin][version] = 1.1
./docroot/profiles/panopoly/drupal-org-release.make:24:projects[panopoly_users][version] = 1.1
./docroot/profiles/panopoly/drupal-org-release.make:29:projects[panopoly_pages][version] = 1.1
./docroot/profiles/panopoly/drupal-org-release.make:32:projects[panopoly_wysiwyg][version] = 1.1
./docroot/profiles/panopoly/drupal-org-release.make:35:projects[panopoly_search][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:6:projects[panopoly_core][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:9:projects[panopoly_images][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:12:projects[panopoly_theme][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:15:projects[panopoly_magic][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:18:projects[panopoly_widgets][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:21:projects[panopoly_admin][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:24:projects[panopoly_users][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:29:projects[panopoly_pages][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:32:projects[panopoly_wysiwyg][version] = 1.1
./docroot/profiles/panopoly/drupal-org.make:35:projects[panopoly_search][version] = 1.1
./docroot/profiles/panopoly/modules/panopoly/panopoly_core/panopoly_core.module:88:      'manifest' => (empty($info['version']) || $info['version'] == '7.x-1.x-dev' || strpos($info['version'], '-dev')) ? 'http://apps.getpantheon.com/panopoly-dev' : 'http://apps.getpantheon.com/panopoly',