Improve salt setup

This commit improves the salt setup of the Vagrant box:
- Salt output is reduced to log level warning
- Hosts entries are created for the internal IPs of all planned gva
  component VMs
- .bashrc and a .bash_functions sourced from it are now managed for the
  vagrant user
- the VM name has been changed to gva.local
- recent salt versions do not depend on m2crypto anymore, therefore it
  is now installed before x509certificate functions are called
- the rabbitmq_vhost for gva is now setup before any users are created
  because the previous implementation was broken with recent salt
  versions
- the gnuviechadmin-locale-data-compile step has been simplified because
  Django 1.9's compilemessages takes care of recursive .mo file
  compilation
- pillar data has been separated by role (especially queue permissions
  and credentials)
- salt configuration is now unified with gvaldap

Vagrantfile

@@ -14,7 +14,7 @@ Vagrant.configure(2) do |config|
   # boxes at https://atlas.hashicorp.com/search.
   config.vm.box = "debian/jessie64"
 
-  config.vm.hostname = "gva-dev"
+  config.vm.hostname = "gva.local"
 
   # Disable automatic box update checking. If you disable this, then
   # boxes will only be checked for updates when the user runs
@@ -60,10 +60,11 @@ Vagrant.configure(2) do |config|
 
   config.vm.provision :salt do |salt|
       salt.bootstrap_script = "salt/bootstrap.sh"
-      salt.minion_id = "gvadev"
+      salt.minion_id = "gva.local"
       salt.masterless = true
       salt.run_highstate = true
       salt.verbose = true
       salt.colorize = true
+      salt.log_level = "warning"
   end
 end