[2.2.0] Checkmk Werk 16889 created: ewon: KeyError (device)

Title: ewon: KeyError (device) Class: fix Compatible: compat Component: checks Date: 1722930487 Edition: cre Level: 1 Version: 2.2.0p33 An existing rule for <code>check_ewon</code> without the mandatory key <code>device</code> would result in an exception <code>KeyError (device)</code>. This change makes the check function use a default, if <code>device</code> is not set.