Add retrying of failed tests by default to reduce flaky tests (#5461)

Whenever a test fails we retry it five times and then decide the
overall result based on that. If three or more of the five retries
fail too then the overall result is FAIL, two or lower means PASS.

We're modifying nunitlite here so this only works for those tests
right now, we'd need to add it to the other test runners too.

1 files changed, 0 insertions, 0 deletions

diff --git a/external/nunit-lite b/external/nunit-lite
-Subproject 690603bea98aae69fca9a65130d88591bc6cabe
+Subproject 5b29e610f4ac95afcb8108fdd6d0bb1936f6cc8