Prepare Beta with all the last modifications

[alvarocabanas]

Actions to do:

• [x] Bump nri-winservices version on the agent --Done needs PR
• [x] Merge https://github.com/newrelic/entity-definitions/pull/274 so the correct Entity Descriptions -- Done
• [x] Create Doc PR with modified values. -- Done needsPR
• [x] Ensure detected Registry endpoint problem (some entities registred with display_name instead of name) doesn't occur. -- Done
• [x] Test the final beta with the forked exporter works as expected. -- Done