Upgrade Plugin Server

[mariusandra]

Changes

• Upgrade Plugin Server to 0.6.1
• Update the key to enable KAFKA for it

Checklist

• All querysets/queries filter by Organization, by Team, and by User
• Django backend tests
• Jest frontend tests
• Cypress end-to-end tests

[Twixes]

Also need to add the Kafka encryption env cars to KEYS.

[mariusandra]

If they are passed as ENV variables, the plugin server can pick them up automatically, no need to pipe through the shell script.

They are currently not in settings and used directly (os.environ["KAFKA_CLIENT_CERT_KEY_B64"]) in django, so I thought to do that here instead of making new lines in settings.py

[Twixes]

Ah,yeah, of course.