Sends update route to the client

- extends presenters to include update endpoint path
- sends path to the client on clusters clusters show view.

app/presenters/clusterable_presenter.rb

@@ -44,6 +44,10 @@ class ClusterablePresenter < Gitlab::View::Presenter::Delegated
     raise NotImplementedError
   end
 
+  def update_applications_cluster_path(cluster, application)
+    raise NotImplementedError
+  end
+
   def cluster_path(cluster, params = {})
     raise NotImplementedError
   end

app/presenters/group_clusterable_presenter.rb

@@ -14,6 +14,11 @@ class GroupClusterablePresenter < ClusterablePresenter
     install_applications_group_cluster_path(clusterable, cluster, application)
   end
 
+  override :update_applications_cluster_path
+  def update_applications_cluster_path(cluster, application)
+    update_applications_group_cluster_path(clusterable, cluster, application)
+  end
+
   override :cluster_path
   def cluster_path(cluster, params = {})
     group_cluster_path(clusterable, cluster, params)

app/presenters/project_clusterable_presenter.rb

@@ -14,6 +14,11 @@ class ProjectClusterablePresenter < ClusterablePresenter
     install_applications_project_cluster_path(clusterable, cluster, application)
   end
 
+  override :update_applications_cluster_path
+  def update_applications_cluster_path(cluster, application)
+    update_applications_project_cluster_path(clusterable, cluster, application)
+  end
+
   override :cluster_path
   def cluster_path(cluster, params = {})
     project_cluster_path(clusterable, cluster, params)

app/views/clusters/clusters/show.html.haml

@@ -15,6 +15,7 @@
   install_runner_path: clusterable.install_applications_cluster_path(@cluster, :runner),
   install_jupyter_path: clusterable.install_applications_cluster_path(@cluster, :jupyter),
   install_knative_path: clusterable.install_applications_cluster_path(@cluster, :knative),
+  update_knative_path: clusterable.update_applications_cluster_path(@cluster, :knative),
   toggle_status: @cluster.enabled? ? 'true': 'false',
   has_rbac: @cluster.platform_kubernetes_rbac? ? 'true': 'false',
   cluster_type: @cluster.cluster_type,

spec/presenters/group_clusterable_presenter_spec.rb

@@ -69,6 +69,14 @@ describe GroupClusterablePresenter do
     it { is_expected.to eq(install_applications_group_cluster_path(group, cluster, application)) }
   end
 
+  describe '#update_applications_cluster_path' do
+    let(:application) { :helm }
+
+    subject { presenter.update_applications_cluster_path(cluster, application) }
+
+    it { is_expected.to eq(update_applications_group_cluster_path(group, cluster, application)) }
+  end
+
   describe '#cluster_path' do
     subject { presenter.cluster_path(cluster) }
 

spec/presenters/project_clusterable_presenter_spec.rb

@@ -69,6 +69,14 @@ describe ProjectClusterablePresenter do
     it { is_expected.to eq(install_applications_project_cluster_path(project, cluster, application)) }
   end
 
+  describe '#update_applications_cluster_path' do
+    let(:application) { :helm }
+
+    subject { presenter.update_applications_cluster_path(cluster, application) }
+
+    it { is_expected.to eq(update_applications_project_cluster_path(project, cluster, application)) }
+  end
+
   describe '#cluster_path' do
     subject { presenter.cluster_path(cluster) }