ReloadInterval E2E test has both incorrect verifications and a race condition

The TestReloadInterval E2E test has completely wrong validations in which the min value should be 1s, not 5s.

But there is a race condition which allow these tests to sometimes pass due to the last test condition.

Therefore, failures in CI are actually correct, and successes are wrong based on the E2E conditions.

4.12

50%

1.Run TestReloadInterval E2E test (make test-e2e TEST=TestReloadInterval)

Sometimes fails on 5us test case:

reloadinterval_test.go:106: router deployment not updated with RELOAD_INTERVAL=5s: timed out waiting for the condition

Should pass E2E