Merge branch 'deployment-tracking' into 'master'

Added queries for tracking deployments

This is for https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5320

See merge request !2

Rakefile

@@ -28,6 +28,10 @@ task :policies do
   unless policy_names.include?('downsampled')
     CLIENT.create_retention_policy('downsampled', db, '7d', 1)
   end
+
+  unless policy_names.include?('forever')
+    CLIENT.create_retention_policy('forever', db, 'INF', 1)
+  end
 end
 desc 'Updates the continuous queries in the database'

queries/other/deployments.txt

+CREATE CONTINUOUS QUERY deployments on $DATABASE
+RESAMPLE EVERY 30m FOR 1h
+BEGIN
+    SELECT *
+    INTO forever.deployments
+    FROM "default".deployments
+END