Add support for Spring Cloud Config Server with username and password

Currently, the VSCode Spring Boot Dashboard supports fetching configuration from an external Spring Cloud Config Server via SPRING_CLOUD_CONFIG_URI. However, it does not support providing authentication credentials.

It would be very useful if the dashboard could also:

• Allow specifying a username and password for the external Config Server in the dashboard settings.
• Read credentials from the environment variables SPRING_CLOUD_CONFIG_USERNAME and SPRING_CLOUD_CONFIG_PASSWORD, similar to how it currently reads SPRING_CLOUD_CONFIG_URI.

Use case:

• Define SPRING_CLOUD_CONFIG_URI environment variable pointing to External Config Server with basic authentication.
• Opening VScode, Spring Boot Dashboard tries to fetch the configuration of Spring Boot apps.
• It fails because it does not read SPRING_CLOUD_CONFIG_USERNAME and SPRING_CLOUD_CONFIG_PASSWORD.

Expected behavior:

Applications launched from the dashboard should successfully retrieve configuration from a secured Config Server, using either explicit settings in the dashboard or the standard environment variables.

output.log

console.log

Thank you!

Start by tracing how the dashboard currently reads SPRING_CLOUD_CONFIG_URI and passes it to applications, then review the dashboard settings path for configuration values. Done means username and password can be supplied through dashboard settings or SPRING_CLOUD_CONFIG_USERNAME and SPRING_CLOUD_CONFIG_PASSWORD, allowing secured Config Server configuration to be retrieved.