Add configurations to use internal Nexus repository

Is your feature request related to a problem? Please describe.
Building of new projects fail due to missing repository configuration.

Describe the solution you'd like
Adding the required configurations to the project would provide a solid foundation and consistency across projects.
e.g. A Java project using gradle requires the correct Nexus URL for code dependencies ( in build.gradle) and managing plugins (in settings.gradle)

Describe alternatives you've considered
An alternative is to allow the firewall to connect to all public repositories

Additional context
none

Example settings.gradle settings:

pluginManagement {
    repositories {
        maven {
            url "https://nexus-repository-url.some.where/repository/maven-central/"
        }
        maven {
            url "https://nexus-repository-url.some.where/repository/atlassian_public/"
        }
        maven {
            url "https://nexus-repository-url.some.where/repository/maven-public/"
        }
    }
}
rootProject.name = 'my-amazing-project'

Start by inspecting the Java quickstarter Gradle configuration, especially build.gradle and settings.gradle, and compare how dependency and plugin repositories are currently defined. Determine which project quickstarters need the internal Nexus configuration, then verify that new projects can resolve dependencies and plugins without access to public repositories.