Updates tests for java 16

spring-cloud-context/src/main/java/org/springframework/cloud/util/random/CachedRandomPropertySource.java

@@ -77,7 +77,8 @@ public class CachedRandomPropertySource extends PropertySource<PropertySource> {
 		}
 		return randomValueCache.computeIfAbsent(type, (theType) -> {
 			if (logger.isDebugEnabled()) {
-				logger.debug("No random value found in cache for key and value, generating a new value");
+				logger.debug(String.format(
+						"No random value found in cache for key: %s and type: %s, generating a new value", key, type));
 			}
 			return getSource().getProperty("random." + type);
 		});