I'll update jclouds-karaf to match and see how little we can get by with in 1.8.x. I think what was happening is that one of the 3rd party jclouds dependencies had a bundle version constraint requiring a newer osgi framework version. The Karaf version 2.2.7 was over 2 years old at this point, so I'm not surprised that the newer bundles didn't resolve.
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