Checkmk Werk 14534: Add unit conversion support for graphs

ID: 14534 Title: Add unit conversion support for graphs Component: metrics Level: 2 Class: New feature Version: 2.2.0i1 This werk adds the support for converting the displayed unit of a metric in a graph. Currently we only support conversion of degrees from Celsius to Fahrenheit or Kelvin but this can be extended in the future. To convert a unit you can use the <i>Convert unit to<i> option in <i>Graph Tunings<i>.