Add "max_valid_packages_stored" config param to worker template (#492)

* is needed for cloudfoundry/cloud_controller_ng#4111

jobs/cloud_controller_ng/spec

@@ -181,6 +181,7 @@ provides:
   - cc.packages.fog_gcp_storage_options
   - cc.packages.fog_connection
   - cc.packages.max_package_size
+  - cc.packages.max_valid_packages_stored
   - cc.packages.webdav_config.blobstore_timeout
   - cc.packages.webdav_config.ca_cert
   - cc.packages.webdav_config.password

jobs/cloud_controller_worker/templates/cloud_controller_ng.yml.erb

@@ -186,6 +186,7 @@ packages:
     <% end %>
   app_package_directory_key: <%= p("cc.packages.app_package_directory_key") %>
   max_package_size: <%= p("cc.packages.max_package_size") %>
+  max_valid_packages_stored: <%= link("cloud_controller_internal").p("cc.packages.max_valid_packages_stored") %>
   <% if_p("cc.packages.cdn") do %>
   cdn:
     uri: <%= p("cc.packages.cdn.uri") %>

spec/cloud_controller_worker/cloud_controller_worker_spec.rb

@@ -81,7 +81,10 @@ module Test
                 'enable_dynamic_job_priorities' => false
               },
               'app_log_revision' => true,
-              'temporary_enable_v2' => true
+              'temporary_enable_v2' => true,
+              'packages' => {
+                'max_valid_packages_stored' => 5
+              }
             }
           }
         end
@@ -267,6 +270,13 @@ module Test
             expect(template_hash['temporary_enable_v2']).to be(true)
           end
         end
+
+        describe 'max valid packages stored' do
+          it 'is set from cloud_controller_internal_link' do
+            template_hash = YAML.safe_load(template.render(manifest_properties, consumes: links))
+            expect(template_hash['packages']['max_valid_packages_stored']).to be(5)
+          end
+        end
       end
     end
   end