## Changes
Noticed this when working on
https://github.com/databricks/cli/pull/2221. `<` is a special HTML
character that is encoded during text replacement when using
`AssertEqualTexts`.
## Tests
N/A
## Changes
Include a materialized copy of built-in templates as reference output.
This updates the output comparison logic to work against an output
directory. The `doComparison` function now always works on real files.
It can now tell apart non-existing files and empty files (e.g., the
`.gitkeep` files in templates).