There is a env exposed bu the jboss.container.maven module which allow users to set a custom settings.xml different than the default [1].

However this env is not honored by the jboss-kie-module script which configures the guvnor maven settings: https://github.com/jboss-container-images/jboss-kie-modules/blob/master/jboss-kie-wildfly-common/added/launch/jboss-kie-wildfly-common.sh#L28

We need to, on templates and apb, expose it, on operator it can be added as a normal env, and make the script above respect this env as well.

[1] - https://github.com/jboss-openshift/cct_module/blob/master/jboss/container/maven/default/bash/artifacts/opt/jboss/container/maven/default/maven.sh#L33-L41