Fix plugins

app/models/ci/build.rb

@@ -99,6 +99,7 @@ module Ci
         new_build.stage = build.stage
         new_build.stage_idx = build.stage_idx
         new_build.trigger_request = build.trigger_request
+        new_build.plugin = build.plugin
         new_build.save
         new_build
       end
@@ -122,7 +123,7 @@ module Ci
     end
     def retryable?
-      project.builds_enabled? && commands.present?
+      project.builds_enabled? && (commands.present? || plugin.present?)
     end
     def retried?

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
-ActiveRecord::Schema.define(version: 20160407120251) do
+ActiveRecord::Schema.define(version: 20160407151602) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -141,6 +141,7 @@ ActiveRecord::Schema.define(version: 20160407120251) do
     t.text     "artifacts_metadata"
     t.integer  "erased_by_id"
     t.datetime "erased_at"
+    t.string   "plugin"
   end
   add_index "ci_builds", ["commit_id", "stage_idx", "created_at"], name: "index_ci_builds_on_commit_id_and_stage_idx_and_created_at", using: :btree