Revised implementation of reporting of external impacts feature

[dennis-behm]

Users have reported a couple requirements on the reporting capability of external impacts.

This PR provides the following enhancements for the reporting of external impacts:

• The reporting is available on all build types, which leverage a repository connection.
• By leveraging the new DBB Toolkit API introduced with 1.1.3, the performance of the feature was significantly improved.
• The scope of the analysis is extended to the actual set of files on the build list (build set) including the actual changes. With this change, even the simple mode provides a larger analysis scope. Please see for documented sample scenarios.
• Resolves and fixes issues with reporting mode deep #238.

The revised implementation requires at least the DBB toolkit version 1.1.3 or above.

[dennis-behm]

@drbruce-git Would you mind to have another look at the recent added commits?

• streamlining how the deleteList is used
• handling of the setup with a back-level DBB server Thanks, Dennis