Address @XmlSeeAlso limitation. Provide the ability to inject the JAXB types

without having the need to explicitly define the inherited types with
@XmlSeelAlso.  Introduced BundleScanner service which scans bundle classes for
annotations dynamically and provides proper artifacts for NB applications to
bootstrap. Eliminate the need for NB application extensions.

Change-Id: I08b6a30a551f63a304732e8fdda9a594d1a6ca93
Signed-off-by: Prasanth Pallamreddy <ppallamr@cisco.com>