Added all Section 4 Level 1 & Level 2

https://benchmarks.cisecurity.org/tools2/ubuntu/CIS_Ubuntu_12.04_LTS_Server_Benchmark_v1.0.0.pdf
No, you are right.  I just got them mixed up during editing.  I think I did the sed one first because it was the one that required me to spin up a shell and text my sed syntax so my brain processed it as the most complicated of the 3.

Fixed.