[CI] Enable Develocity test retry selectively

[adpi2]

The sbt-develocity plugin offers the ability to retry failing tests, and to detect flaky ones. A flaky test is marked as flaky in the Develocity test report, which will help us track them across many CI executions. See for example the flaky test chart in the Pekko dashboard.

This PR contains the following configuration:

• retry each failing test once (to be adjusted if needed)
• don't retry if more than 10 tests fail in the current test run (to be adjusted if needed)
• fail the build if a test is flaky
• disable test retry in a predefined set of test classes: the compilation test classes. In those classes, we don't have enough granularity for the test retry to be meaningful, because each test is responsible for compiling many independent files.

@dotta @c00ler @Duhemm @lrytz

[sjrd]

Core meeting says YES!

[tgodzik]

It was more like "Who wouldn't want this?" 😅