Print all validation errors in live_content_spec

The errors reported by RSpec are truncated. It's useful to see all of
them when there are any so you don't need to rerun the tests after
addressing each one

Author: yndajas

spec/integration/graphql/live_content_spec.rb

@@ -38,6 +38,11 @@
         parsed_response = JSON.parse(response.body)
         errors = JSON::Validator.fully_validate(schema, parsed_response)
 
+        if errors.present?
+          puts schema_name
+          errors.each(&method(:puts))
+        end
+
         expect(errors).to eql([])
       end
     end