Added all CIS Section 8 Level 1 & 2 tasks & various fixes

https://benchmarks.cisecurity.org/tools2/ubuntu/CIS_Ubuntu_12.04_LTS_Server_Benchmark_v1.0.0.pdf
I'd say no.  If a particular site wants a different cron policy they can always override this policy with their own after the CIS role is applied.  Doesn't seem worth making it any more complicated than it already is.