Correction, i think bamboo will update the module version in the distro if you release it from distro regardless of if you have include it in openmrs-contrib-bamboo.
@cintiadr why is the benefit of adding a module to openmrs-contrib-bamboo?
That file lists the modules which will are using the refapp pom file; so when there’s a release of the reference application, the build will go on each one of those modules and update the version of the parent pom to the new SNAPSHOT.