`jena-osgi` instead of `jena-bundle`

naming style matches other Apache projects, e.g.:

    stain@biggie-mint ~/.m2/repository $ find . -name *-osgi
    ./org/apache/batik/batik-osgi
    ./org/apache/maven/shared/maven-osgi
    ./org/apache/httpcomponents/httpcore-osgi
    ./org/apache/httpcomponents/httpclient-osgi
    ./org/springframework/osgi/spring-osgi

vs.

    stain@biggie-mint ~/.m2/repository $ find . -name *-bundle
    ./org/apache/apache-jar-resource-bundle
    ./org/apache/jena/jena-bundle