Merge pull request #2 from AAROC/master

AAROC Sync (ldap role finished)
Merge branch 'master' of github.com:AAROC/DevOps
Merge branch 'master' of github.com:AAROC/DevOps
Preparation of IdP+LDAP machine. Prerequisites almost there but there
is a strange behaviour with ssh to verify
Merge pull request #31 from INFN-Catania/master

Contributions from @fmarco76 for the ldap and idp testing