Vagrant configuration preparation

Folder for Vagrant configuration created and small readme file added
Simple Vagrantfile added
.gitignore file for vagrant internal folder

The .vagrant folder contains local settings. All settings can change on
every vargant up command, so it is not good idea to keep .vargant
folder under git management.
Configuration of vagrant shared folder changed

Vagrant file is not in project (git project) root directory. That means
the ansible playbooks are not shared with virtual machines (on default
only vagrant parent is shared).

Changed configuration specify that whole git project will be shared
with virtual machines
Provisioning script with ansible installation
Static ip configuration for machine
Quiet (-q) option added to apt-get execution
Multimachine setup

4 nodes configuration (1 for ansible, 3 for kafka):

vagrant name    ip address      comment
------------    ----------      -------
ansible         192.168.0.10    ansible machine
kafka0          192.168.1.10    first kafka machine
kafka1          192.168.1.11    second kafka machine
kafka2          192.168.1.12    third kafka machine
Minor refator + documentation

* Minor changes in names
* Comments in scripts added
* README.md added with vagrant machine setup description
Initial Vagrant configuration

4 machines:
* 1 with ansible installation
* 1 for further installation of zookeeper
* 2 for further installation of kafka
Additional information in README file

Added warning about hardoced hosts setup for ansible
Provision script change repositories mirrors

US Mirrors changed to FI
Merge pull request #1 from mprzybylak/vagrant-config

Add: Vagrant config
Merge branch 'vagrant-config' of https://github.com/mprzybylak/ansible-cluster
Merge remote-tracking branch 'upstream/master'