disable securitymanager in tests, until #129 is addressed in tika

pom.xml

@@ -33,6 +33,9 @@
 
     <properties>
         <!-- If we need to define any specific property -->
+        <!-- see https://github.com/elastic/elasticsearch-mapper-attachments/issues/129
+             this plugin is currently unusable unless users disable security -->
+        <tests.security.manager>false</tests.security.manager>
     </properties>
 
     <dependencies>

src/main/java/org/elasticsearch/index/mapper/attachment/AttachmentMapper.java

@@ -486,7 +486,7 @@ public class AttachmentMapper extends AbstractFieldMapper<Object> {
             if (!ignoreErrors) {
                 logger.trace("exception caught", e);
                 throw new MapperParsingException("Failed to extract [" + indexedChars + "] characters of text for [" + name + "] : "
-                        + e.getMessage());
+                        + e.getMessage(), e);
             } else {
                 logger.debug("Failed to extract [{}] characters of text for [{}]: [{}]", indexedChars, name, e.getMessage());
                 logger.trace("exception caught", e);