Merge branch '22864-kubernetes-deploy-with-terminal' into 'master'

Add online terminal support for Kubernetes

## What does this MR do?

Gives terminal access to kubernetes-deployed environments  via the deployment service

## Are there points in the code the reviewer needs to double check?

## Why was this MR needed?

Part of idea to production

## Screenshots (if relevant)

### `/root/reviewing/environments`

![Screen_Shot_2016-12-15_at_19.10.40](/uploads/bd2c54c07b6c85dec3328a20cd185b64/Screen_Shot_2016-12-15_at_19.10.40.png)

### `/root/reviewing/environments/10013`

![Screen_Shot_2016-12-19_at_12.52.39](/uploads/db4e4e06cda88437e8727433d65898b9/Screen_Shot_2016-12-19_at_12.52.39.png)

### `/root/reviewing/enviroments/10013/terminal`

![Screen_Shot_2016-12-15_at_02.35.52](/uploads/1bb77b7e2de2c657ae3bda62dc4f0970/Screen_Shot_2016-12-15_at_02.35.52.png)

## Does this MR meet the acceptance criteria?

- [x] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- Tests
  - [X] Added for this feature/bug
  - [x] All builds are passing
- [X] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [X] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

* Closes #22864 #22958
* Alternative to, and somewhat based on,  !6770 
* Depends on https://gitlab.com/gitlab-org/gitlab-workhorse/merge_requests/83

See merge request !7690

2 files changed, 60 insertions, 0 deletions

diff --git a/spec/features/environment_spec.rb b/spec/features/environment_spec.rb
index 0c1939fd885..56f6cd2e095 100644
--- a/spec/features/environment_spec.rb
+++ b/spec/features/environment_spec.rb
@@ -38,6 +38,10 @@ feature 'Environment', :feature do
         scenario 'does not show a re-deploy button for deployment without build' do
           expect(page).not_to have_link('Re-deploy')
         end
+
+        scenario 'does not show terminal button' do
+          expect(page).not_to have_terminal_button
+        end
       end
 
       context 'with related deployable present' do
@@ -60,6 +64,10 @@ feature 'Environment', :feature do
           expect(page).not_to have_link('Stop')
         end
 
+        scenario 'does not show terminal button' do
+          expect(page).not_to have_terminal_button
+        end
+
         context 'with manual action' do
           given(:manual) { create(:ci_build, :manual, pipeline: pipeline, name: 'deploy to production') }
 
@@ -84,6 +92,26 @@ feature 'Environment', :feature do
             end
           end
 
+          context 'with terminal' do
+            let(:project) { create(:kubernetes_project, :test_repo) }
+
+            context 'for project master' do
+              let(:role) { :master }
+
+              scenario 'it shows the terminal button' do
+                expect(page).to have_terminal_button
+              end
+            end
+
+            context 'for developer' do
+              let(:role) { :developer }
+
+              scenario 'does not show terminal button' do
+                expect(page).not_to have_terminal_button
+              end
+            end
+          end
+
           context 'with stop action' do
             given(:manual) { create(:ci_build, :manual, pipeline: pipeline, name: 'close_app') }
             given(:deployment) { create(:deployment, environment: environment, deployable: build, on_stop: 'close_app') }
@@ -158,4 +186,8 @@ feature 'Environment', :feature do
                                              environment.project,
                                              environment)
   end
+
+  def have_terminal_button
+    have_link(nil, href: terminal_namespace_project_environment_path(project.namespace, project, environment))
+  end
 end
diff --git a/spec/features/environments_spec.rb b/spec/features/environments_spec.rb
index e1b97b31e5d..72b984cfab8 100644
--- a/spec/features/environments_spec.rb
+++ b/spec/features/environments_spec.rb
@@ -113,6 +113,10 @@ feature 'Environments page', :feature, :js do
           expect(page).not_to have_css('external-url')
         end
 
+        scenario 'does not show terminal button' do
+          expect(page).not_to have_terminal_button
+        end
+
         context 'with external_url' do
           given(:environment) { create(:environment, project: project, external_url: 'https://git.gitlab.com') }
           given(:build) { create(:ci_build, pipeline: pipeline) }
@@ -145,6 +149,26 @@ feature 'Environments page', :feature, :js do
             end
           end
         end
+
+        context 'with terminal' do
+          let(:project) { create(:kubernetes_project, :test_repo) }
+
+          context 'for project master' do
+            let(:role) { :master }
+
+            scenario 'it shows the terminal button' do
+              expect(page).to have_terminal_button
+            end
+          end
+
+          context 'for developer' do
+            let(:role) { :developer }
+
+            scenario 'does not show terminal button' do
+              expect(page).not_to have_terminal_button
+            end
+          end
+        end
       end
     end
   end
@@ -195,6 +219,10 @@ feature 'Environments page', :feature, :js do
     end
   end
 
+  def have_terminal_button
+    have_link(nil, href: terminal_namespace_project_environment_path(project.namespace, project, environment))
+  end
+
   def visit_environments(project)
     visit namespace_project_environments_path(project.namespace, project)
   end