Yep, it is an information that would be useful to know!
For your first question, the better osgi-aware solution is install the driver lib as bundle.
For your second question, for osgi-aware properties placeholder, take a look at camel-osgi example shipped with smx4 kit. This example demostrates how to use property placeholder in osgi container.
Just follow the README.txt and pay attention the beans.xml in this demo.