Convert clusters to use a top-level controller

In preparation so that we can create both cluster attached to project
and cluster attached to group.

- Move ClustersController to top level

- Move Clusters::ApplicationsController to top-level too

- Creates a Clusters::BaseController to share common functions

- Do not rely on @project ivar. Anything could set the ivar.

- Fix Vue page components due to new data-page value

Because of the controller change we have gone from
`projects:clusters:new` to `clusters:new`, so we need to update the file
location of the page components. There is somewhere a function that will
convert data-page to a file location.

On that note, projects/clusters/gcp/new/, translate to
Projects::Clusters::Gcp#new doesn't exist so replace that with
clusters/create_gcp/ and clusters/create_user/

3 files changed, 3 insertions, 3 deletions

diff --git a/qa/qa/page/project/operations/kubernetes/add.rb b/qa/qa/page/project/operations/kubernetes/add.rb
index 18c16ca6db7..0128fbefebd 100644
--- a/qa/qa/page/project/operations/kubernetes/add.rb
+++ b/qa/qa/page/project/operations/kubernetes/add.rb
@@ -4,7 +4,7 @@ module QA
       module Operations
         module Kubernetes
           class Add < Page::Base
-            view 'app/views/projects/clusters/new.html.haml' do
+            view 'app/views/clusters/new.html.haml' do
               element :add_existing_cluster_button, "Add existing cluster" # rubocop:disable QA/ElementWithPattern
             end
 
diff --git a/qa/qa/page/project/operations/kubernetes/add_existing.rb b/qa/qa/page/project/operations/kubernetes/add_existing.rb
index f8e026b4405..c2fa920641d 100644
--- a/qa/qa/page/project/operations/kubernetes/add_existing.rb
+++ b/qa/qa/page/project/operations/kubernetes/add_existing.rb
@@ -4,7 +4,7 @@ module QA
       module Operations
         module Kubernetes
           class AddExisting < Page::Base
-            view 'app/views/projects/clusters/user/_form.html.haml' do
+            view 'app/views/clusters/user/_form.html.haml' do
               element :cluster_name, 'text_field :name' # rubocop:disable QA/ElementWithPattern
               element :api_url, 'text_field :api_url' # rubocop:disable QA/ElementWithPattern
               element :ca_certificate, 'text_area :ca_cert' # rubocop:disable QA/ElementWithPattern
diff --git a/qa/qa/page/project/operations/kubernetes/index.rb b/qa/qa/page/project/operations/kubernetes/index.rb
index 312b459ac89..13197c5fae4 100644
--- a/qa/qa/page/project/operations/kubernetes/index.rb
+++ b/qa/qa/page/project/operations/kubernetes/index.rb
@@ -4,7 +4,7 @@ module QA
       module Operations
         module Kubernetes
           class Index < Page::Base
-            view 'app/views/projects/clusters/_empty_state.html.haml' do
+            view 'app/views/clusters/_empty_state.html.haml' do
               element :add_kubernetes_cluster_button, "link_to s_('ClusterIntegration|Add Kubernetes cluster')" # rubocop:disable QA/ElementWithPattern
             end