Fix/qualify base model schemas

[davehowell]

This PR adds the pg_catalog schema to all the base models to cope with the requirement of "late binding views" (with no schema binding) that all objects must be qualified by schema, e.g. from <schema>.<objectname> rather than just from <objectname>

see #26

For consistency, I also added a base model stv_partitions , because the underlying system view was being directly referenced by the redshift_admin_table_stats view.

Testing

All of the models in the ./base directory are ephemeral as specified in the dbt_project.yml file, so they aren't directly tested by their instantiation, however, all of these base models are referenced by models in the ./views directory in this package which are instantiated. These views are effectively serving as integration tests when they are run.

I ran this both with a global bind: false (all views will be created without schema binding) in the dbt_project.yml file and without, and it now runs successfully with that specification.

[Limess]

👋🏻 This seems like a sensible change, is there a reason it hasn't been merged or has it just been forgotten about?

[clrcrl]

I tested this out locally today and it all seems to work