Redshift web: Change SORTKEY encoding to RAW

[mark-walle]

According to https://github.com/awslabs/amazon-redshift-utils/blob/master/src/Investigations/EarlyMaterialization.md it is possible that encoded sorkeys can cause "sortkey skew" and lead to excessive block I/O with early materialization.

In:

• web/v1/redshift/sql-runner/sql/standard/02-page-views/01-main/00-setup-page-views.sql
• web/v1/redshift/sql-runner/sql/standard/03-sessions/01-main/00-setup-sessions.sql
• web/v1/redshift/sql-runner/sql/standard/04-users/01-main/00-setup-users.sql

The tables:

• {{.output_schema}}.page_views{{.entropy}}
• {{.output_schema}}.sessions{{.entropy}}
• {{.output_schema}}.users{{.entropy}}

are created with explicit ZSTD encoding on the columns defined as primary sortkeys.

I believe these columns should have their encodings changed from ZSTD to RAW.