Description of problem

Multi-module application (source+deps) analysis fails when maven credentials are associated.  This will be required for secured maven repositories.

How reproducible

Always.

Steps to Reproduce:

1. Create an application.  Recommend: https://github.com/WASdev/sample.daytrader7
2. Associate maven credentials.
3. Run analysis.

Actual results

Task fails with error="file already exists." 

Expected results

Succeeds.

Additional info

The file already exists is a safety put in place to support local testing.  It ensured that when running the addon locally, we did not overwrite a developer's git, svn and maven configuration and credentials.  For multi-module applications, maven runs twice.  Each time it will install the settings.xml.  The second time, it detects that it already exists and fails.

I think the fix is to adjust the safety to skip installing configuration and credentials when they already exist rather than error.