Switch local testing to subdomain model

Requires manual setup through hosts file or dns server for now.

Vagrantfile

@@ -1,11 +1,14 @@
 Vagrant.configure('2') do |config|
   config.vm.define 'tau' do |debian|
     debian.vm.box = 'bento/ubuntu-20.04'
-    debian.vm.network :private_network, ip: '192.168.27.2'
+    debian.vm.network :private_network, ip: '192.168.56.2'
     debian.vm.hostname = 'tau'
     debian.vm.provider 'virtualbox' do |vb|
       vb.memory = '2048'
       vb.cpus = 2
     end
+    debian.vm.provision :hosts do |provisioner|
+      provisioner.add_host '192.168.56.2', ['ansible.test']
+    end
   end
 end