XML comment in property elements is not handled correctly

When a property element contains an XML comment, I would expect the property value to be the concatenation of the text nodes surrounding the comment.

The XmlDomNodeImporterImpl#readRecursive code suggests that the value of the property would be the last text node. That is indeed what a simple test shows XML_comment_in_property_elements_is_not_handled_correctly.patch

But it's even worse when used to parse multiple servers/groups by Arquillian: isometimes the first text node is used instead of the last node, making the tests impredictible. See the attached XML_comment_in_container_property-1.patch