cannot override bultin macros

[beckjake]

Describe the bug

Built-in macros can't be overridden in dbt run-operation, and dbt docs generate faces a similar problem where users cannot locally override get_catalog.

There are two parts to this bug:

• One part is basically the same as Cannot override dbt default materializations #1962 but for regular macros, and without specificity handling (adapter_macro handles that).
• The other part is that many macro calls that should support overriding (get_catalog is the big one!) currently do not, because they don't use the full manifest.

Steps To Reproduce

• Override the get_catalog macro locally to raise: {% macro get_catalog(information_schemas) -%}{% do exceptions.raise_compiler_error('oops') %}{% endmacro %}
• Note that dbt picks it up (macros count goes up by 1)
• Note that dbt ignores the macro and runs the default one :(

Expected behavior

I expect dbt to use my macro, but instead it ignored it and used dbt.get_catalog.

System information

Any database, dbt >= 0.15.0, any python

[beckjake]

Fixed in #2035