It currently points to a generic IP, resulting in a desktop site being shown.
After digging around in the guts of OpenStackManager code, I discovered a simple 'Manage Domains' link in the sidebar for cloudadmins (incl. me). Have added this.
Or rather, added the ability for @MaxSem to be able to point the DNS record to the mobile IP :)
<MaxSem> YuviPanda, works now. just need to wait for dns cache to update and see if it works
Currently it resolves to:
$ dig m.wikidata.beta.wmflabs.org
m.wikidata.beta.wmflabs.org. 3600 IN A 18.104.22.168
From Special:NovaAddress that is the IP of deployment-cache-mobile03 which is the mobile varnish cache.
So it is definitely solved.