Moved the check for SVM representation type to a more appropriate location
Simplified unit test
Inference of the SVM classification method type

The SupportVectorMachineModel element specifies an optional attribute
'classificationMethod', which informs the PMML consumer if the
classification should be performed using one-against-all (the default)
or one-against-one approach.

Currently, several PMML producers disregard this attribute (ie. leave it
uninitialized in situations where it should be initialized with a
non-default value). The JPMML library is able to automatically identify
and correct such deficiencies during model evaluation.