remove the toLowerCase calls on entityName

This change facilitates concrete implementation entity names with mixed
case. In some circumstances the capitalization of an entity name affects
how it is rendered by client applications, this change will give
implementation authors more control of the names.

Author: elmiko

src/main/java/io/radanalytics/operator/common/AbstractOperator.java

@@ -297,7 +297,16 @@ private boolean checkIntegrity() {
     }
 
     private void initInternals() {
-        entityName = (named != null && !named.isEmpty()) ? named.toLowerCase() : (entityName != null && !entityName.isEmpty()) ? this.entityName.toLowerCase() : (infoClass == null ? "" : infoClass.getSimpleName().toLowerCase());
+         // prefer "named" for the entity name, otherwise "entityName" and finally the converted class name.
+        if (named != null && !named.isEmpty()) {
+            entityName = named;
+        } else if (entityName != null && !entityName.isEmpty()) {
+            entityName = this.entityName;
+        } else if (infoClass != null) {
+            entityName = infoClass.getSimpleName();
+        } else {
+            entityName = "";
+        }
         isCrd = isCrd || "true".equals(System.getenv("CRD"));
         prefix = prefix == null || prefix.isEmpty() ? getClass().getPackage().getName() : prefix;
         prefix = prefix + (!prefix.endsWith("/") ? "/" : "");