vagrant: add debug option

If debug is set to true in vagrant_variables.yml then during the vagrant
provision phase Ansible will run with -vvvv option

Signed-off-by: Sébastien Han <seb@redhat.com>

Vagrantfile

@@ -5,8 +5,6 @@ require 'yaml'
 require 'time'
 VAGRANTFILE_API_VERSION = '2'
 
-DEBUG = false
-
 config_file=File.expand_path(File.join(File.dirname(__FILE__), 'vagrant_variables.yml'))
 settings=YAML.load_file(config_file)
 
@@ -29,6 +27,7 @@ MEMORY         = settings['memory']
 ETH             = settings['eth']
 DOCKER          = settings['docker']
 USER            = settings['ssh_username']
+DEBUG           = settings['debug']
 
 ASSIGN_STATIC_IP = !(BOX == 'openstack' or BOX == 'linode')
 DISABLE_SYNCED_FOLDER = settings.fetch('vagrant_disable_synced_folder', false)
@@ -111,7 +110,7 @@ ansible_provision = proc do |ansible|
   end
 
   if DEBUG then
-    ansible.verbose = '-vvv'
+    ansible.verbose = '-vvvv'
   end
   ansible.limit = 'all'
 end

vagrant_variables.yml.sample

@@ -62,3 +62,6 @@ vagrant_sync_dir: /home/vagrant/sync
 os_tuning_params:
   - { name: kernel.pid_max, value: 4194303 }
   - { name: fs.file-max, value: 26234859 }
+
+# Debug mode, runs Ansible with -vvvv
+debug: false