Make bridge/child pipelines clickable

This allows to easily navigate from parent pipeline
to a downstream triggered pipeline that is triggered
by a bridge job.

app/models/ci/bridge.rb

@@ -81,6 +81,10 @@ module Ci
       sourced_pipelines.exists?
     end
 
+    def first_downstream_pipeline
+      sourced_pipelines.first
+    end
+
     def downstream_pipeline_params
       return child_params if triggers_child_pipeline?
       return cross_project_params if downstream_project.present?

changelogs/unreleased/make-bridge-pipelines-clickable.yml

+---
+title: Make bridge/child pipelines clickable
+merge_request:
+author:
+type: added

lib/gitlab/ci/status/bridge/common.rb

@@ -10,14 +10,18 @@ module Gitlab
           end
 
           def has_details?
-            false
+            can?(user, :read_pipeline, subject.first_downstream_pipeline)
           end
 
-          def has_action?
-            false
+          def details_path
+            return unless subject.first_downstream_pipeline
+
+            pipeline = subject.first_downstream_pipeline
+            project_pipeline_path(pipeline.project, pipeline)
           end
 
-          def details_path
+          def has_action?
+            false
           end
         end
       end