Add dev dependency on ci_reporter for test reports.

process_shared.gemspec

@@ -19,4 +19,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency('minitest')
   s.add_development_dependency('minitest-matchers')
   s.add_development_dependency('version')
+  s.add_development_dependency('ci_reporter')
 end