log full exception information when calling JSR223 scripts (#3176)

* log full exception information when calling JSR223 scripts

The scripts are user code, so in order to help them debug their code,
the full stack trace is very useful.

Signed-off-by: Cody Cutrer <cody@cutrer.us>

bundles/org.openhab.core.automation.module.script/src/main/java/org/openhab/core/automation/module/script/internal/ScriptEngineManagerImpl.java

@@ -199,6 +199,7 @@ public class ScriptEngineManagerImpl implements ScriptEngineManager {
                 }
             } catch (Exception ex) {
                 logger.error("Error during evaluation of script '{}': {}", engineIdentifier, ex.getMessage());
+                logger.debug("", ex);
             }
         }
     }