Adds a way to start multiple manual jobs in stage

- Adds an endpoint on PipelinesController
- Adds a service that iterates over every build in a stage and
plays it.
- Includes 'play_manual' details on EntitySerializer
- Builds a new Stage state: PlayManual. An stage can take this status if
it has manual builds or an skipped, scheduled or manual status
- Includes FE modifications and specs

1 files changed, 27 insertions, 0 deletions

diff --git a/spec/support/shared_examples/ci/stage_shared_examples.rb b/spec/support/shared_examples/ci/stage_shared_examples.rb
new file mode 100644
index 00000000000..925974ed11e
--- /dev/null
+++ b/spec/support/shared_examples/ci/stage_shared_examples.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+shared_examples 'manual playable stage' do |stage_type|
+  let(:stage) { build(stage_type, status: status) }
+
+  describe '#manual_playable?' do
+    subject { stage.manual_playable? }
+
+    context 'when is manual' do
+      let(:status) { 'manual' }
+
+      it { is_expected.to be_truthy }
+    end
+
+    context 'when is scheduled' do
+      let(:status) { 'scheduled' }
+
+      it { is_expected.to be_truthy }
+    end
+
+    context 'when is skipped' do
+      let(:status) { 'skipped' }
+
+      it { is_expected.to be_truthy }
+    end
+  end
+end