crimson server: Implemented SelectHost and InsertHost

go/src/infra/crimson/sql/schema.sql

 -- Copyright 2016 The Chromium Authors. All Rights Reserved.
 --
 -- Use of this source code is governed by a BSD-style
 -- license that can be found in the LICENSE file or at
 -- https://developers.google.com/open-source/licenses/bsd
 
 -- Create tables in the crimson DB.
 
 CREATE TABLE ip_range (
   site varchar(20) NOT NULL,
   vlan varchar(20),
-  start_ip varbinary(16) NOT NULL,
-  end_ip varbinary(16) NOT NULL
+  start_ip varchar(34) NOT NULL,
+  end_ip varchar(34) NOT NULL
 ) ENGINE=INNODB;
+
+CREATE TABLE host (
+  site varchar(20) NOT NULL,
+  hostname varchar(63) NOT NULL,
+  mac_addr varchar(14) NOT NULL,
+  ip varchar(34) NOT NULL,
+  boot_class varchar(20),
+  PRIMARY KEY (mac_addr)
+) ENGINE=INNODB;