Feature/ansible config generator

This branch includes an example configuration file with two clusters (named monasca#) with three hosts each, plus the Python script to parse it.  The example config outputs these files:
```
├── group_vars/
│   ├── all
│   ├── monasca1
│   ├── monasca1_master
│   ├── monasca1_workers
│   ├── monasca2
│   ├── monasca2_master
│   └── monasca2_workers
├── hosts
└── host_vars/
    ├── mon-ae1test-monasca01.useast.hpcloud.net
    ├── mon-ae1test-monasca02.useast.hpcloud.net
    ├── mon-ae1test-monasca03.useast.hpcloud.net
    ├── mon-ae1test-monasca04.useast.hpcloud.net
    ├── mon-ae1test-monasca05.useast.hpcloud.net
    └── mon-ae1test-monasca06.useast.hpcloud.net
```

Keystone admin tokens and passwords have been cleverly changed to protect the innocent.
I think it would be better to leave the arg parsing to the main in the module and just send the input file to the class.