Missing gs-nsg-profiles pom in maven repository

gs-nsg-wfs-profile and gs-nsg-wmts-profile for the 2.13.0 release are available in the Boundless repository but their parent, gs-nsg-profiles is missing: https://repo.boundlessgeo.com/main/org/geoserver/community/

I think that the nsg-profiles module just needs to be added to the modules section in the community pom: https://github.com/geoserver/geoserver/tree/master/src/community/pom.xml

This is similar to https://osgeo-org.atlassian.net/browse/GEOS-8614