NIFI-11576 Fixed XMLReader to now allow for handling name spaced attributes when the schema is inferred.

[dan-s1]

Summary

NIFI-11576
The bug in this case was the code to create the schema and the code that parsed the data used two different methods on how to retrieve the attribute name thereby preventing the ability to retrieve the values of the attributes. The XmlRecordSource class used javax.xml.namespace.QName method getLocalPart while class XMLRecordReader used javax.xml.namespace.QName method toString which is the fully qualified name of the attribute which in the case of a name spaced attribute gives the fully qualified name. The fix was to have both classes use getLocalPart.

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