Adding a Vagrantfile for local testing

Running `vagrant up` will bring up a vagrant box
and run all gate tests.

Change-Id: Ie0b72b9be552b392ca9db35ab8cefdeb721d86aa

.gitignore

@@ -61,3 +61,6 @@ releasenotes/build
 
 # Test temp files
 tests/plugins
+
+# Files created by vagrant testing
+.vagrant

Vagrantfile

@@ -0,0 +1,13 @@
+Vagrant.configure(2) do |config|
+  config.vm.box = "ubuntu/trusty64"
+  config.vm.provider "virtualbox" do |v|
+    v.memory = 2048
+    v.cpus = 2
+  end
+  config.vm.provision "shell", inline: <<-SHELL
+    sudo su -
+    cd /vagrant
+    apt-get update
+    ./run_tests.sh
+  SHELL
+end