nsd doesn't install without creating the `nsd` user first - merge branch from...

nsd doesn't install without creating the `nsd` user first - merge branch from randallsquared-master, fixes #25

scripts/dns.sh

@@ -9,6 +9,17 @@
 
 # Install nsd, our DNS server software.
 
+# ...but first, we have to create the user because the 
+# current Ubuntu forgets to do so in the .deb
+# see issue #25 and https://bugs.launchpad.net/ubuntu/+source/nsd/+bug/1311886
+if id nsd > /dev/null 2>&1; then
+	true; #echo "nsd user exists... good";
+else
+	useradd nsd;
+fi
+
+# Okay now install the package.
+
 apt-get -qq -y install nsd
 
 # Prepare nsd's configuration.