Add allocation limits for nodes.

Percentage based, if null no limit is set (allows unlimited servers)

database/migrations/2015_12_12_031511_add_node_resource_limits.php

@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AddNodeResourceLimits extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('nodes', function (Blueprint $table) {
+            $table->mediumInteger('memory_overallocate')->after('memory')->unsigned()->nullable();
+            $table->mediumInteger('disk_overallocate')->after('disk')->unsigned()->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('nodes', function (Blueprint $table) {
+            $table->dropColumn('memory_overallocate');
+            $table->dropColumn('disk_overallocate');
+        });
+    }
+}