Add ruby 2.2.10, remove ruby 2.2.8 [#157255054]
Add ruby 2.2.10, remove ruby 2.2.8 [#157255054]

cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack