Staging: pgbouncer pointing to incorrect DB
On staging, queries to FDW tables are not matching with queries to the real tables.
```ruby
[ gstg ] production> ProjectRepositoryState.count
=> 0
[ gstg ] production> Geo::Fdw::ProjectRepositoryState.count
=> 3068953
```
which led to
`ActiveRecord::Base.connection_config` => `:host=>"postgres-01-db-gstg.c.gitlab-staging-1.internal", :port=>5432`
`Geo::TrackingBase.connection.execute("SELECT * from pg_foreign_server").values` => `host=pgbouncer-01-db-gstg.c.gitlab-staging-1.internal,port=6432`
But
```
cat /var/opt/gitlab/consul/databases.ini
[databases]
gitlabhq_production = host=postgres-02-db-gstg.c.gitlab-staging-1.internal auth_user=pgbouncer
```
We're expecting `postgres-01-db-gstg.c.gitlab-staging-1.internal` but it seems pgbouncer is configured for `postgres-02-db-gstg.c.gitlab-staging-1.internal`
/cc @eReGeBe @nick.thomas
issue