FEATURE - change schema destination of __dbt_tmp tables

[borjavb]

resolves dbt-labs/dbt-adapters#519
docs dbt-labs/docs.getdbt.com/#

Problem

Allowing changing the schema destination of __dbt_tmp tables

Solution

Instead of changing the make_temp_relation at dbt-adapters level, we change the dependency before calling the function.

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX

[github-actions]

This PR has been marked as Stale because it has been open with no activity as of late. If you would like the PR to remain open, please comment on the PR or else it will be closed in 7 days.