Added all items from CIS Section 7 Levels 1 & 2

https://benchmarks.cisecurity.org/tools2/ubuntu/CIS_Ubuntu_12.04_LTS_Server_Benchmark_v1.0.0.pdf
:+1: I think building this in a way that works for both new and existing boxes makes sense (especially in preparation for open sourcing). Not sure if this should be done as a handler, or just a single `cmd` task that runs after all of the others.