Export everything if the query does not define attribute or key to collec

[maheshkelkar]

As discussed in pull request #29 by @cyrille-leclerc and @petermodzelewski, creating an issue to allow support for:

Adding more power for XML configuration

• adding support for ALL attributes, when no attribute is specified
• adding support for ALL keys, when no key is specified for CompositTypes

Following changes were made as a result:

• Allow null attribute
• Method getResultName() in ResultNameStrategy was modified to pass attributeName, because query.getAttributeName() could be null
• Added tests for covering wildcard tests.

It will allow support for following configurations:

<queries>                     
    <query/>
</queries>

<queries>                     
    <query objectName="java.lang:type=Memory"/>
</queries>

Sponsored by: Lookout, Inc.