Ansible: automate prod server installation

[php-coder]

This is an-umbrella task for a full automation of prod server setup with Ansible.

Sub tasks:

• [x] #268 add Vagrantfile and setup Ansible
• [x] #269 install JDK
• [x] #270 run mystamps site with H2
• [x] #271 install nginx
• [ ] install MySQL
• [ ] run mystamps site with MySQL
• [ ] configure ssh
• [ ] configure ufw
• [ ] install/configure fail2ban (do we still need it?)
• [ ] configure exim
• [ ] install/configure apticron
• [ ] ~~install/configure newrelic (java)~~
• [ ] ~~install/configure newrelic (server)~~
• [ ] ~~install/configure logentries~~
• [ ] documentation
• [x] ~~set config.vm.post_up_message~~
• [x] ~~create vagrant/README.md file:~~
  • ~~install ansible~~
  • ~~install virtualbox~~
  • ~~install vagrant~~
  • ~~vagrant up~~
  • ~~vagrant ssh~~
  • ~~open 'https://localhost:8443'~~
  • ~~why we're using ansible instead of ansible_local provider?~~