support/misc: updating Vagrantfile to ubuntu 18.04

This patch updates the vagrant box to ubuntu bionic 64 and switches back
to the official ubuntu image cause the issues with the official image
are now solved.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/misc/Vagrantfile

@@ -12,7 +12,7 @@ VM_MEMORY=2048
 VM_CORES=1
 
 Vagrant.configure('2') do |config|
-	config.vm.box = 'bento/ubuntu-16.04'
+	config.vm.box = 'ubuntu/bionic64'
 
 	config.vm.provider :vmware_fusion do |v, override|
 		v.vmx['memsize'] = VM_MEMORY