### Description
Often times there are tests being skipped either due to missing env vars
or explicitly defined in the base script but these get lost in the logs.
This PR updates the scripts to leverage a custom error code if being
skipped due to missing env vars and this custom error code is being
caught by the base script and logs all files being skipped to a file. At
the end of the script, this file gets logged in the CI output.
### Description
Update any use of OpenAI for generating embeddings in the ingest tests
to use Huggingface
**Bonus Changes:**
* Remove duplicate delta table test
* Delete delta table destination directory at the beginning of the test
to make sure it doesn't exist and prevent the test from breaking.
