[RFE] Support credential files for Gradle projects

[abrugaro]

When adding Gradle as a supported project management system for analysis in Konveyor, the dependencies defined in the build.gradle file may be hosted in private repositories or repositories that do not allow anonymous access.

Currently, it is possible to upload a settings.xml file to obtain such dependencies in Maven projects, however, there is no option to do so for Gradle projects.

Without this feature, it would not be possible to use Konveyor to analyze Gradle projects with dependencies hosted in private repositories.

[konveyor-ci-bot]

This issue is currently awaiting triage.
If contributors determine this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.
The triage/accepted label can be added by org members.

[jmle]

The solution is simply for us to add a new type of credential named "Gradle properties". This file can be placed directly in the project directory, and it will contain the passwords set by the user. The user will have to include references in the build.gradle file as explained here. The gradle.properties file will contain the passwords.