Split `simple-smoke-test.sh` to be used elsewhere [DI-215]

[JackPGreen]

simple-smoke-test.sh is a useful suite of tests to validate a packaged Hazelcast instance - but is Docker-centric.

• Refactored to split the script into two halves:
  • abstract-simple-smoke-test that tests against an abstract Hazelcast instance
  • simple-smoke-test a Docker-specific implementation
• Refactored the metadata checks to search the instance's logs for the variant and version (i.e. OSS/EE, 5.5.0 etc) rather than inspecting the containers' filesystem
  • an existing test elsewhere in the codebase already does this so we already have some dependency on keeping the output consistent, although I can't currently find the test in question
• Added extra coverage from hazelcast-packaging's check-hazelcast-health.sh

Required for DI-215

[JackPGreen]

Nice work! Although in the long term we should think about extracting these check to a seperate repository that could be used in docker, packaging workflows but also for pre/post-release verification, just a thought

Agreed, this is the least-worst place for it.

[JackPGreen]

@nishaatr are you able to review, please?