add lxd_host model

+class LxdHost < ActiveRecord::Base
+  has_secure_password
+end

+class CreateLxdHosts < ActiveRecord::Migration
+  def change
+    create_table :lxd_hosts do |t|
+      t.text :name
+      t.text :uri
+      t.string :password_digest
+
+      t.timestamps null: false
+    end
+  end
+end

+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  name: MyText
+  uri: MyText
+  password_digest: <%= BCrypt::Password.create('secret') %>
+
+two:
+  name: MyText
+  uri: MyText
+  password_digest: <%= BCrypt::Password.create('secret') %>

+require 'test_helper'
+
+class LxdHostTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end