Hash host and port to avoid reading them after shutdown

[fedinskiy]

Summary

(Summarize the problem solved by this PR, and how to verify it manually)

Please check the relevant options

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Dependency update
• Refactoring
• Breaking change (fix or feature that would cause existing functionality to change)
• This change requires a documentation update
• This change requires execution against OCP (use run tests phrase in comment)

Checklist:

• Example scenarios has been updated / added
• Methods and classes used in PR scenarios are meaningful
• Commits are well encapsulated and follow the best practices

[rsvoboda]

run tests

[fedinskiy]

Tests from the TS have passed on a local machine, so I consider this ready for review

[pjgg]

@fedinskiy should this changes also go to main branch?

[pjgg]

run tests

[pjgg]

Errors on OCP are not related to the changes.

[fedinskiy]

Test OpenShiftStrimziOperatorKafkaWithoutRegistryMessagingIT which was persistently failing, does not call the changed methods, so these failures are non related