currently karaf endorse jaxws api jar, which need use javax.xml.soap package, this package could be from jdk or from saaj-api bundle jar. However, as we endorse jaxws api, so jaxws class javax.xml.ws.soap.SOAPFaultException will always load
javax.xml.soap.SOAPFault from boot classloader, so that if customer bundle import-package javax.xml.soap from saaj-api bundle, then customer easily run into exception like
Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "javax/xml/soap/SOAPFault"
We should also endorse saaj-api jar and in jre.properties let system bundle 0 export javax.xml.soap;version="1.3".