[thanos] - fix tenant limits and replica gprd storegateway setup
What/Why
- Fixes the tenant limit query, as it was duplicating results of two jobs.
- Replicas the existing
gprd
setup for thegitlab
storegateways as these are currently OOMing with each gateway trying to load too much data. - Bumps memory limits on the staying query pods. This should hopefully be temporary while we fine tune the experimental recording rules to scope to small subsets of data.