VM Updates (#83)

- Minor fixes to p4runtime exercise and README
- Adding p4runtime/solution
- Adding p4runtime/topology.json
- Updating .gitignore to include solution directory and topology.json
- Fixing root-bootstrap to exit on errors
- Updating VM name in Vagrantfile
- Setting up VM to automatically log 'p4' user in on startup

P4D2_2017_Fall/vm/Vagrantfile

@@ -3,7 +3,10 @@
 
 Vagrant.configure(2) do |config|
   config.vm.box = "bento/ubuntu-16.04"
+  config.vm.define "p4-tutorial" do |tutorial|
+  end
   config.vm.provider "virtualbox" do |vb|
+    vb.name = "P4 Tutorial" + Time.now.strftime(" %Y-%m-%d")
     vb.gui = true
     vb.memory = 2048
     vb.cpus = 2

P4D2_2017_Fall/vm/root-bootstrap.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 
-set -x
+# Print commands and exit on errors
+set -xe
 
 sudo add-apt-repository ppa:webupd8team/sublime-text-3
 sudo add-apt-repository ppa:webupd8team/atom
@@ -79,3 +80,11 @@ sed -i s@#background=@background=/usr/share/lubuntu/wallpapers/1604-lubuntu-defa
 
 # Disable screensaver
 apt-get -y remove light-locker
+
+# Automatically log into the P4 user
+cat << EOF | tee -a /etc/lightdm/lightdm.conf.d/10-lightdm.conf
+[SeatDefaults]
+autologin-user=p4
+autologin-user-timeout=0
+user-session=Lubuntu
+EOF