Add custom field "app=keycloak-config-cli" to JSON LogstashEncoder output

[HenningWaack]

Problem Statement

In order to simplify finding logs from Keycloak Config CLI in a log aggregator like Kibana, it would be beneficial to mark every log entry with a custom field which identifies the CLI as its source.

Proposed Solution

• Add a custom field to the src/main/resources/logback-spring.xml file with name="app" and value="keycloak-config-cli"

Environment

• Keycloak Version: all
• keycloak-config-cli Version: all
• Java Version: all

Additional information

No response

Acceptance Criteria

• The custom field "app=keycloak-config-cli" is added to each log message when using the "json-log" spring profile.