Add SkipRule support to the database

[mapresto]

Describe the solution you'd like
Allow the use of the skip rule functionality within PowerStigScan for rules that are broken or otherwise not applicable to the environment that is being tested.

The solution should have a means to pull the rule ID's by a per server and per role means. A description field should be added so that the reasons can be reviewed and the CKL file can be updated accordingly during a scan.