Added all of Section 9 Levels 1 & 2 from CIS Ubuntu 12.04 LTS Benchmark

https://benchmarks.cisecurity.org/tools2/ubuntu/CIS_Ubuntu_12.04_LTS_Server_Benchmark_v1.0.0.pdf
I'd say that the most likely scenario is that this role will be applied, and then another will be applied overtop with site specific policies that supersedes these.  In that scenario I'd say all we need is a generic application of the cis suggested parameters.

I think defaults as a general rule in this playbook will be best used to configure parts of the process that are dangerous to productions systems.