Fixed duplicate postgresql ppa definition
Changed positium public key for ml421-crunch
Directory for data files on local disk
Bash as shell instead of sh
Added a missing \ to a sed
Merge branch 'master' of dtg-code.cl.cam.ac.uk:infrastructure/dtg-puppet
Unlock account but set no password
Merge branch 'master' of code.dtg.cl.cam.ac.uk:infrastructure/dtg-puppet