fix(ingest): redshift usage properly count queries

[treff7es]

Introducing a couple of fixes for the usage query:

• Using stl_query instead of stl_queryytext because it does not split queries at 200 characters (https://docs.aws.amazon.com/redshift/latest/dg/r_STL_QUERYTEXT.html) and it also contains information about if the query was aborted or not
• using start date from stl_query instead of stl_scan table to make sure the distinct works well
• changing end time comparison to use start time and not with end time as the other usage queries work the same way and to not miss a query
• Removing uri_opts=self.options from get_sql_alchemy_url to make consistent with redshift ingest and to be able to set sqlalchemy options like connect_args

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable)

[shirshanka]

LGTM!

[hsheth2]

LGTM!

[treff7es]

I have updated the test query to fix the build.
It should pass now.