ci: github actions

[v1v]

Requires logstash-plugins/.ci#100

What

Add GitHub actions for:

• Integrations
• Secure Integrations
• Default tests

Why

Illustrate how those things could potentially work using GitHub actions

Implementation details

We can even simplify and store the matrix rows in individual files. So the GH actions will read them and create the relevant jobs.

By doing so we can simplify even further the CI, so teams will only need to look after those files to add/remove entries. See for instance:

• https://github.com/logstash-plugins/logstash-output-elasticsearch/compare/main...v1v:logstash-output-elasticsearch:feature/use-github-actions-refactor?expand=1

Integration tests

version	snapshot
7.current	false
7.current	true
8.previous	false
8.previous	true
8.current	false
8.current	true
9.current	false
9.current	true
main	true

Secure tests

version	snapshot
7.current	false
7.current	true
8.current	false
8.current	true
9.current	false
9.current	true
main	true

Base tests

version	snapshot	docker
9.current	false	dockerjdk21.env
9.previous	false	dockerjdk21.env
8.current	false	dockerjdk21.env
8.previous	false	dockerjdk21.env
7.current	false
main	true	dockerjdk21.env
9.next	true	dockerjdk21.env
9.current	true	dockerjdk21.env
9.previous	true	dockerjdk21.env
8.current	true	dockerjdk21.env
8.previous	true	dockerjdk21.env
7.current	true