Itermittent failure - archetype build (FT timeout)

[tomas-langer]

The file archetypes/helidon/src/main/archetype/se/custom/files/src/main/java/__pkg__/FtService.java.mustache defines timeout to be 100 milliseconds
The file archetypes/helidon/src/main/archetype/se/custom/files/src/test/java/__pkg__/FtServiceTest.java.mustache defines a test that

• checks that a sleep of 50 ms passes
• checks that a sleep of 150 ms times out
  The lambda is too small - on a slower environment, we can timeout the first request, and succeed the second one (which is happening in our pipelines sometimes).

We should have diffs of at least 5 seconds

• set timeout to 5 seconds
• check with 50 ms sleep (success)
• check with 10 seconds sleep (timeout)

This should be a sufficient buffer for our pipeline tests.

Please make sure there isn't another test in Helidon examples or integration test with similar issues.

[tvallin]

Fixed by #4690 in main branch and backport to 3.x here #4934