Hibernate does not like overloaded setters

This resolves the error:
IllegalArgumentException in class: ...ChannelProduct, setter method of property: beta
expected type: boolean, actual value: java.lang.String

The error occured when activating a Proxy. Not sure why this is popping up now
and not ealier.
Automatic commit of package [spacewalk-java] release [2.2.87-1].