Adding Vagrantfile for local developer testing

Running `vagrant up` will execute run_tests.sh
and perform doc build, lint and functional tests

Change-Id: Idf80956bcb64cd483fade7d3dfd112a4ce4d8b7e

.gitignore

@@ -60,3 +60,6 @@ releasenotes/build
 
 # 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