FoD: Add command to Export and Import Audit Templates

[kadraman]

Application Audit Templates apply filters at a per-application level that either suppress or change the severity of issues across all current and future scans. Once you have configured filters for a specific application you can export them as a template that could be imported and applied to other similar applications.

Allow templates to be exported in native JSON format:

fcli fod audit-template export MyApp:MyRel -ScanType [Static|Dynamic|OSS|All] -o filename.json

Allow templates to be imported in native JSON format:

fcli fod audit-template import MyApp:MyRel -f filename.json

Note that this would override and existing Audit Template configuration. Should we display a warning?