vagrant: Add Vagrantfile and some basic configuration

Vagrantfile

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+Vagrant.configure(2) do |config|
+	config.ssh.forward_agent = true
+	config.ssh.username = 'vagrant'
+	config.vm.network "private_network", ip: "192.168.219.2"
+
+	config.vm.synced_folder ".", "/vagrant", disabled: true
+
+	config.vm.define "mgmt-dev" do |instance|
+		instance.vm.box = "fedora/24-cloud-base"
+	end
+
+	config.vm.provider "virtualbox" do |v|
+		v.memory = 1536
+		v.cpus = 2
+	end
+
+	config.vm.provision "file", source: "vagrant/motd", destination: ".motd"
+	config.vm.provision "shell", inline: "cp ~vagrant/.motd /etc/motd"
+
+	config.vm.provision "file", source: "vagrant/mgmt.bashrc", destination: ".mgmt.bashrc"
+	config.vm.provision "file", source: "~/.gitconfig", destination: ".gitconfig"
+
+	# copied from make-deps.sh (with added git)
+	config.vm.provision "shell", inline: "dnf install -y libvirt-devel golang golang-googlecode-tools-stringer hg git"
+
+	# set up vagrant home
+	script = <<-SCRIPT
+		grep -q 'mgmt\.bashrc' ~/.bashrc || echo '. ~/.mgmt.bashrc' >>~/.bashrc
+		. ~/.mgmt.bashrc
+		go get -u github.com/purpleidea/mgmt
+		cd ~/gopath/src/github.com/purpleidea/mgmt
+		make deps
+	SCRIPT
+	config.vm.provision "shell" do |shell|
+		shell.privileged = false
+		shell.inline = script
+	end
+end

vagrant/mgmt.bashrc

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+# alias for simple access
+alias cdmgmt='cd $GOPATH/src/github.com/purpleidea/mgmt'
+
+export GOPATH=~/gopath

vagrant/motd

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+Welcome to the mgmt hacking VM.
+
+Please make sure that your authorized key for GitHub is added to the SSH agent
+on the host machine (see `ssh-add -l`).
+
+You can jump into the mgmt repo with the alias `cdmgmt`.
+
+To get started, try:
+
+$ cdmgmt
+$ make clean build
+$ ./mgmt run --tmp-prefix --yaml examples/exec1.yaml --converged-timeout 5
+
+Enjoy!