biocache-db playbook fix

biocache-db playbook fix
Updated version of generic-hub to 1.2.1

Hot fix for code typo.
Fixed the installation for redhat based systems and Ansible 1.6.6
Merge pull request #15 from nickdos/master

Merge pull request #3 from AtlasOfLivingAustralia/master
Merge pull request #4 from AtlasOfLivingAustralia/master

Sync fork with Master