Add jdk.* to the example bootdelegation property (to emphasis that it is needed on java9)
# The following property makes specified packages from the class path
# available to all bundles. You should avoid using this property.
-#org.osgi.framework.bootdelegation=sun.*,com.sun.*
+#org.osgi.framework.bootdelegation=sun.*,com.sun.*,jdk.*
# Felix tries to guess when to implicitly boot delegate in certain
# situations to ease integration without outside code. This feature
