Add Vagrantfile for local role testing

Running `vagrant up` will now execute the
same steps run by the role's gating process

Change-Id: I22a21d1f495ac2fc5a7b2b864285253af2730723

.gitignore

@@ -64,3 +64,6 @@ tests/plugins
 
 # Files created by releasenotes build
 releasenotes/build
+
+# Vagrant testing artifacts
+.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