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

roots/gnuviechadmin/gvaldap/run_celery.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+set -ex
+
+. {{ home }}/gvasettings.sh
+cd {{ appdir }}
+{{ virtualenv }}/bin/celery worker -A gvaldap -Q ldap --loglevel=INFO

roots/gnuviechadmin/gvaldap/settings.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+export DJANGO_SETTINGS_MODULE="gvaldap.settings.{{ salt['pillar.get']('gnuviechadmin:deploymenttype', 'production') }}"
+export GVALDAP_ADMIN_NAME="Jan Dittberner"
+export GVALDAP_ADMIN_EMAIL="{{ salt['pillar.get']('gnuviechadmin-gvaldap:admin_email') }}"
+export GVALDAP_LDAP_URL="{{ salt['pillar.get']('gnuviechadmin-gvaldap:ldap_url') }}"
+export GVALDAP_LDAP_USER="{{ salt['pillar.get']('gnuviechadmin-gvaldap:ldap_user') }}"
+export GVALDAP_LDAP_PASSWORD="{{ salt['pillar.get']('gnuviechadmin-gvaldap:ldap_password' ) }}"
+export GVALDAP_BASEDN_GROUP="{{ salt['pillar.get']('gnuviechadmin-gvaldap:basedn_group') }}"
+export GVALDAP_BASEDN_USER="{{ salt['pillar.get']('gnuviechadmin-gvaldap:basedn_user') }}"
+export GVALDAP_SECRETKEY="{{ salt['grains.get_or_set_hash']('gnuviechadmin-gvaldap:SECRET_KEY', 50) }}"
+export GVALDAP_BROKER_URL="{{ broker_url }}"
+export GVALDAP_ALLOWED_HOSTS="{{ salt['pillar.get']('gnuviechadmin-gvaldap:allowed_hosts') }}"
+export GVALDAP_SERVER_EMAIL="{{ salt['pillar.get']('gnuviechadmin-gvaldap:server_email') }}"