DATAMONGO-601 - Prevent password from being logged in case of an exception.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoDbUtils.java

@@ -113,7 +113,7 @@ public abstract class MongoDbUtils {
 
 				if (!db.authenticate(username, password == null ? null : password.toCharArray())) {
 					throw new CannotGetMongoDbConnectionException("Failed to authenticate to database [" + databaseName
-							+ "], username = [" + username + "], password = [" + password + "]", databaseName, credentials);
+							+ "], username = [" + username + "], password = [ -not-shown- ]", databaseName, credentials);
 				}
 			}
 		}