Be consistent for ASes that only sign routes.

Currently we have a lot of unsafe tags for ASes that only sign routes however Liberty Global & Amazon both have partially safe tags, should these be migrated to unsafe?

Start by locating the tag definitions for Liberty Global and Amazon and compare them with the existing unsafe tags for ASes that only sign routes. Confirm the intended classification from the issue, then update the affected tags consistently and verify that the site renders the expected labels.

Written by the indexing model from the issue text.