Make doHealthCheck() final to satisfy PMD's understandable complaint

Author: nealeu

weblab-common/src/main/java/ucles/weblab/common/config/ConfigurationHealthCheck.java

@@ -44,7 +44,7 @@ public ConfigurationHealthCheck(Environment environment, List<String> requiredPr
 
 
     @Override
-    protected void doHealthCheck(Builder bldr) {
+    final protected void doHealthCheck(Builder bldr) {
 
         List<String> missing = requiredProperties.stream()
                 .filter(key -> !environment.containsProperty(key))