bump celluloid version and lock http to safe version
bump celluloid version and lock http to safe version

damacus/berkshelf-api,pantheon-systems/berkshelf-api,pantheon-systems/berkshelf-api,gueux/berkshelf-api,gueux/berkshelf-api,pantheon-systems/berkshelf-api,gueux/berkshelf-api,damacus/berkshelf-api,pingworks/berkshelf-api-binrepo-store,damacus/berkshelf-api,pingworks/berkshelf-api-binrepo-store,pingworks/berkshelf-api-binrepo-store