First stage of conversion to Ubuntu 18.04 and Ceph Octopus

Vagrantfile

@@ -6,15 +6,13 @@ Vagrant.configure("2") do |config|
 	vagrant_root = File.dirname(__FILE__)
 	
 	# Trigger the Vagrant pre-up script before uping the first VM only
-	config.trigger.before :up, :vm => ["node-admin"], :append_to_path => ["#{vagrant_root}/scripts"] do
-		run "pre-up.sh"
-	end
+
 
 	# Shell provisionner for all VMs
 	config.vm.provision "ceph-preflight", type: "shell", path: "scripts/provision.sh"
 	
 	# All VMs are based on the same box
-	config.vm.box = "bento/ubuntu-16.04"
+	config.vm.box = "generic/ubuntu1804"
 
 	# Use nfs for shared folder
 	config.vm.synced_folder ".", "/vagrant",
@@ -42,6 +40,9 @@ Vagrant.configure("2") do |config|
 	config.vm.define "node-admin", primary: true do |admin|
 		admin.vm.hostname = "node-admin"
 		admin.vm.provision "ceph-install", type: "shell", keep_color: true, path: "scripts/provision-admin.sh"
+                admin.trigger.before :up do |trigger|
+                  trigger.run = {path: "scripts/pre-up.sh"}
+                end
 	end
 
 	# osd1 VM with private cluster network