Added a Vagrant setup to instantly test the formula

.gitignore

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+.vagrant/
+.idea/
+top.sls

Vagrantfile

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+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
+VAGRANTFILE_API_VERSION = "2"
+
+Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
+  config.vm.box = "ubuntu/trusty64"
+  config.vm.hostname = "salt"
+  config.vm.synced_folder "./", "/srv/salt", id: "vagrant-root"
+
+  config.ssh.forward_agent = true
+
+  config.vm.provider :virtualbox do |vb|
+    # Use VBoxManage to customize the VM. For example to change memory:
+    vb.customize ["modifyvm", :id, "--memory", "1024"]
+  end
+  if Vagrant.has_plugin?("vagrant-cachier")
+    config.cache.scope = :box
+  end
+
+  # Set up salt-master and minion
+  config.vm.provision "shell", path: "dev/setup-salt.sh"
+end

dev/pillar_top.sls

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+base:
+  'salt':
+    - salt

dev/setup-salt.sh

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+#!/bin/sh
+sudo add-apt-repository ppa:saltstack/salt -y
+sudo apt-get update -y
+sudo apt-get install salt-master -y
+sudo apt-get install salt-minion -y
+# Accept all keys#
+sleep 5 #give the minion a few seconds to register
+sudo salt-key -y -A
+# setup top files to test the formula
+sudo mkdir -p /srv/pillar
+sudo ln -s /srv/salt/pillar.example /srv/pillar/salt.sls
+sudo ln -s /srv/salt/dev/pillar_top.sls /srv/pillar/top.sls
+# this file will be copied to make a running config. it should not be checked in.
+sudo cp /srv/salt/dev/state_top.sls /srv/salt/top.sls
+

dev/state_top.sls

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+base:
+  'salt':
+    - salt.master
+    - salt.minion
+    - salt.cloud