DATAES-224 retain newlines when reading mapping/setting files

Fixed test-settings yaml

src/main/java/org/springframework/data/elasticsearch/core/ElasticsearchTemplate.java

@@ -1164,8 +1164,9 @@ public class ElasticsearchTemplate implements ElasticsearchOperations, Applicati
 			bufferedReader = new BufferedReader(inputStreamReader);
 			String line;
 
+			String lineSeparator = System.getProperty("line.separator");
 			while ((line = bufferedReader.readLine()) != null) {
-				stringBuilder.append(line);
+				stringBuilder.append(line).append(lineSeparator);
 			}
 		} catch (Exception e) {
 			logger.debug(String.format("Failed to load file from url: %s: %s", url, e.getMessage()));