[2.3.0] Checkmk Werk 16298 created: Avoid duplicate port allocations within the same site

Title: Avoid duplicate port allocations within the same site Class: fix Compatible: compat Component: omd Date: 1700140615 Edition: cre Level: 1 Version: 2.3.0b1 When configuring ports via <tt>omd config</tt>, Checkmk checks if the configured port is already in use, both by the same site and by other sites. The check if the port is already in use by another process of the same site was broken, which could lead to duplicate port allocations within a site.