bumped the spark version to 1.1.1
added logic and template for centos 7 epel repo
added logic for centos 6 vs 7 and NFS daemons
fixed dsa/rsa host key existance checks
fixed a file name typo in spark example
hdfs permissions properly done on head node only
empty volume names in tenant handled properly
disable /etc/hosts managing by cloud-init
example cluster.yml.template updated to new CentOS 6.6 images
added security group logic for OpenStack Icehouse, where you need to open access in the internal network also
spark example sudo fix
spark example sudo fix