Add script to automate installation from source code

Tasks:
 * optionally add yum repositories
 * install required dependencies
 * install proftpd FTP server
 * install ISC DHCP server
 * install fence-agents
 * install cobbler

Supported architectures: x86, ppc64
Supported Linux distributions: CentOS and RHEL Server 6/7

extra author: Andrea Vidigal Bucci <andreavb@linux.vnet.ibm.com>
Merge pull request #1299 from alanoe/alanoe/automate_installation_from_source

Add script to automate installation from source code