Move push_event_id to the last on the geo_event_log table

db/migrate/20170522201800_create_geo_event_log.rb

@@ -3,11 +3,10 @@ class CreateGeoEventLog < ActiveRecord::Migration
 
   def change
     create_table :geo_event_log do |t|
-      t.integer :push_event_id
       t.datetime :created_at, index: true, null: false
+      t.integer :push_event_id, index: true
     end
 
     add_foreign_key :geo_event_log, :geo_push_events, column: :push_event_id, on_delete: :cascade # rubocop: disable Migration/AddConcurrentForeignKey
-    add_index :geo_event_log, :push_event_id
   end
 end

db/schema.rb

@@ -501,8 +501,8 @@ ActiveRecord::Schema.define(version: 20170602003304) do
   add_index "forked_project_links", ["forked_to_project_id"], name: "index_forked_project_links_on_forked_to_project_id", unique: true, using: :btree
 
   create_table "geo_event_log", force: :cascade do |t|
-    t.integer "push_event_id"
     t.datetime "created_at", null: false
+    t.integer "push_event_id"
   end
 
   add_index "geo_event_log", ["created_at"], name: "index_geo_event_log_on_created_at", using: :btree