Save Report and Ad Hoc Report Generate endpoint wrappers

[ntaylor-r7]

@gschneider-r7 opening per our conversation. A few of the report actions are unfinished: RequestAdHocReportGenerate is only partially written and doesn't handle most of the parameters that the endpoint accepts and RequestReportsSave is not implemented at all.

[gschneider-r7]

Started work on report_configs branch: https://github.com/rapid7/nexpose-client-python/compare/report_configs

[gschneider-r7]

Progress so far:

• [x] GenerateAdhocReport()
  • [x] Implement AdhocReportConfiguration class with all supported properties
  • [x] Implement GenerateAdhocReport() method in the main nexpose/session class
• [ ] SaveReportConfiguration()
  • [x] Implement ReportConfiguration class with all supported properties
  • [x] Implement SaveReportConfiguration() method in the main nexpose/session class
  • [ ] Figure out how to pass generate_now parameter through the magic/reflective method callers
• [ ] GetReportConfigurationDetails()
  • [x] Use ReportConfiguration class instead of ReportConfigurationSummary
  • [x] Implement CreateFromXML() for all of the extras (Filters, Schedule, Delivery, Email, etc)