Initial commit
Add jenkins configuration
Add SLURM configuration
Beautification
Update doc
Update doc
rename README file
Move munge and slurm specific tasks to different files
Update slurm configuration, set nfs exports also.
Add site.yml file
Update
Add ganglia configuration
Various fixes.
Add names to the playbooks

	modified:   ganglia.yml
	modified:   jenkins.yml
	modified:   site.yml
	modified:   slurm.yml
Add documentation for the ganglia playbook.
Add file to store commonly used variables
Move stuff into `roles` directory
Add yum repository to CentOS distributions

	new file:   roles/common/files/etc/yum.repos.d/gc3.repo.j2
	modified:   roles/common/tasks/gc3repo.yml
Add module to configure drbd
Add .gitattributes file to crypt/encrypt private_vars/* files

	new file:   .gitattributes