EPIC: Plugin Dependencies Automation

[tolzhabayev]

Why?
We should automate updating our plugin examples as much as possible to avoid them becoming stale or developers having issues that are already solved by newer versions that are available.

#285 (comment)

Tasks

Beta Give feedback

1. Include docker-compose files into script which updates grafana versions #285
   +0
   
2. Cleanup plugin examples - remove the ones we don't want to showcase #307
   0 of 5
   +0
   
3. Write basic e2e tests for those that are missing coverage #314
   +0