Move vagrant stuff to extras/

Change-Id: I7e3d6ecc3f23d862004c273e23e36e234ceb6015
Signed-off-by: Damjan Marion <damarion@cisco.com>

extras/vagrant/README

@@ -0,0 +1,28 @@
+INTRO:
+
+This is a vagrant environment for VPP.
+
+VPP currently works under Linux and has support for:
+
+- Ubuntu 14.04, Ubuntu 16.04 and Centos7.2
+
+The VM builds VPP from source which can be located at /vpp
+
+VM PARTICULARS:
+This vagrant environment creates a VM based on environment variables found in ./env.sh
+To use, edit env.sh then
+  source ./env.sh
+  vagrant up
+
+By default, the VM created is/has:
+- Ubuntu 14.04
+- 2 vCPUs
+- 4G of RAM
+- 2 NICs (1 x NAT - host access, 1 x VPP DPDK enabled)
+
+PROVIDERS:
+
+Supported vagrant providers are:
+
+- Virtualbox, VMware Fusion/Workstation, Libvirt
+