Checkmk Werk 15728: mk_oracle: revert werk 15210

ID: 15728 Title: mk_oracle: revert werk 15210 Component: Setup Level: 1 Class: Bug fix Version: 2.3.0b1 The introduction of werk 15210 brought convenience for some, while it unintentionally broke the rules for others. This new werk reverts the rule set back to the previous behaviour. Users should reverify the auth values for host and port in their existing rules and disable those options if this was previously the case.