Using ServiceMix bundle for jsch-agentproxy-sshj

This should work now that [SMX4-1749](https://issues.apache.org/jira/browse/SMX4-1749) is closed...
+1 with the following caveat: This could bite you later if someone doesn't understand the relationship between the version for the plain jar file and the servicemix repackaged osgi bundle. ie if they increment to 0.0.8 and wonder why the build suddenly fails on the org.apache.servicemix.bundles dependency 0.0.8_2.  I see the precedent for doing this already existed, but I prefer to keep it straight forward like it is a few lines above with jsch.bundle.version since the bare 0.0.7 isn't even used for anything else after this patch.  Not a big deal though, and maybe I can propose this during my cleanup of jclouds-cli and jclouds-karaf too.

btw, if you come across anything like this down the road, let me know and I can push fixes for servicemix.