ISPN-4227 + ISPN-4380 OSGi - import packages - don't hardcode version ranges

https://issues.jboss.org/browse/ISPN-4227

Removes the Import-Package hardcoded definitions and lets bnd/maven-bundle-plugin maintain the list of imports. In addition to this both the provider and the consumer version policies of bnd have been changed from the default [==,=+) and [==,+) to [====,====] which forces the use of the same version as defined in maven as dependency.

Also since the test restructure done for the previous issue revealed a bug causing the XmlFileParsingTest to fail I've included the commit for it in the same PR:

https://issues.jboss.org/browse/ISPN-4380