Update Vagrant script to avoid needing sudo for build.sh

* Update Vagrantfile to run git clone command as unprivileged to avoid having root own the directory
* Update README to reflect changed command

Change-Id: Ibfde4f9cce2367ee44afb43dbafbaf6d626d7381

README.md

@@ -32,7 +32,7 @@ Using Vagrant for fast local provisioning:
     * vagrant up
     * vagrant ssh
     * cd stacktach-sandbox
-    * sudo ./build.sh
+    * ./build.sh
 
     Note: 
 	This uses sandbox defaults including the use of the Winchester

vagrant/Vagrantfile

@@ -4,4 +4,5 @@
 Vagrant.configure(2) do |config|
   config.vm.box = "ubuntu/trusty64"
   config.vm.provision "shell", path: "bootstrap.sh"
+  config.vm.provision "shell", inline: "git clone https://github.com/stackforge/stacktach-sandbox.git", privileged: false
 end

vagrant/bootstrap.sh

@@ -21,4 +21,3 @@ then
     fi
 fi
 
-git clone https://github.com/stackforge/stacktach-sandbox.git