Make salt-broker reconnecting on master IP change

[vzhestkov]

What does this PR change?

In some cases salt-broker could got stuck trying to connect to the salt-master with the old IP address of it, in case if IP address of the master has changed.

This fix is making salt-broker more agressive on re-resolving IP address.

GUI diff

No difference.

Documentation

• No documentation needed: only internal and user invisible changes

Test coverage

• No tests: add explanation

• No tests: already covered

• Unit tests were added

• Cucumber tests were added

• DONE

Links

Tracks: https://github.com/SUSE/spacewalk/issues/24752, https://github.com/SUSE/spacewalk/issues/24871
Issue(s): #
Port(s): # add downstream PR(s), if any

• DONE

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⚠️ Some changelog tests have failed. @vzhestkov, please review and fix the changelog issues with an additional PR.