Hi Albert,
Thanks for sharing. Just to clarify for anyone that might need it, this file is found in the <Installation Home>/sona
type-work/nexus/conf/security.xml.
Regarding the nolio-repo.properties file... this file controls the password that the Release Automation management server uses to connect to the repository (nexus or artifactory). So this file should definitely be updated if you're changing the password for the repository.
Cheers,
Gregg