Oniro Migration: runner specification strong-mustang and knowing-macaque

Need information about runner specification: strong-mustang and knowing-macaque

Provide these informations in documentation : https://gitlab.eclipse.org/eclipse-wg/oniro-wg/products-services-oniro-wg/it-services-oniro-wg/pipelines-architecture-oniro-wg/-/blob/main/oniro-pipelines-infrastructure.adoc#user-content-listing-flavor