DEPLOY-13: Properly manage OBM version
Correct minor errors in obm-cert role
DEPLOY-10: Finish Cyrus roles
Add testinv file to .gitignore
Remove mistakenly committed file
Correct behaviour when selinux isn't installed
Improve hosts file management
Sync role : Correctly collect all IPV4 address
OBM-DB-PG Role: Correct requiretty sudo option
Add hability to have more than 1 obmfull host

 You can then limit ansible operations to 1 host
 using `--limit hostname_fqdn` command-line option
Improvements for Xen Hypervisor installation
DEPLOY-13: Properly manage OBM version (update)
Add info about valid hostnames requirement
DEPLOY-10: Correct mistake in cyrus-backend role
DEPLOY-10: Correct indent in cyrus-backend role
DEPLOY-10: Correct mistake in cyrus-common role
DEPLOY-10: Remove quotes from murder password