Add allowed repositories for Java Maven builds

Reference: https://redhat.atlassian.net/browse/KONFLUX-10598

Author: cmarulas

data/rule_data.yml

@@ -286,3 +286,7 @@ rule_data:
 
   allowed_rpm_build_pipelines:
     - build-rpm-package
+  
+  allowed_maven_repositories:
+    - https://indy.corp.redhat.com
+    - https://maven.repository.redhat.com/ga/