At present, Hazelcast configurations used in tests disable multicast join but leave network join auto-detection enabled. This can cause issues with parallel test execution on machines that have bigger number of CPU cores/threads.
This commit updates Hazelcast configurations used in tests to disable network join auto-detection and thus ensure no network join method ends up being enabled.
As of spring-projects/spring-security#11653, Spring Security's [at]Enable*Security annotations are not meta annotated with [at]Configuration which breaks some of our tests.
This commit adds missing [at]Configuration annotations where needed.
Closes gh-2118
