revert to use opensaml bundle 2.6.1_1

Conflicts:
	parent/pom.xml
Try to find a more usable interface as the "default" may not support multicast
Update UDPDestination to allow specifying the interface to use via a property
Also, try to decect a usable interface if not specified
[CXF-6038] Only add the handler interceptors once
This closes #26

Signed-off-by: Daniel Kulp <dkulp@apache.org>
Recording .gitmergeinfo Changes