Update vagrant devbox provisioning

- run provisioning script as root
- don't load friendica_test_data.sql which is outdated
- install friendica and create users via console commands
- install cronjob in `/etc/cron.d/friendica` and run as `www-data` user
- force to have "vagrant-vbguest" insstalled. We need updated vbguest
  addins to correctly mount local folder
- add "config.hostname" and "system.ssl_policy" values in
  `local.config.vagrant.php`

mods/local.config.vagrant.php

@@ -29,6 +29,7 @@ return [
 	// ****************************************************************
 
 	'config' => [
+		'hostname' => 'friendica.local',
 		'admin_email' => 'admin@friendica.local',
 		'sitename' => 'Friendica Social Network',
 		'register_policy' => \Friendica\Module\Register::OPEN,
@@ -38,5 +39,6 @@ return [
 		'default_timezone' => 'UTC',
 		'language' => 'en',
 		'basepath' => '/vagrant',
+		'ssl_policy' => \Friendica\App\BaseURL::SSL_POLICY_SELFSIGN,
 	],
 ];