"odl-netconf-mdsal" or "odl-netconf-clustered-topology" breaks feature:install in karaf client

Tested on latest Boron.

1. Extract bare ODL; cd to the distribution; run bin/start.
2. sshpass -pkaraf bin/client feature:install odl-restconf
3. sshpass -pkaraf bin/client feature:install odl-clustering-test-app
4. sshpass -pkaraf bin/client feature:install odl-netconf-mdsal
5. sshpass -pkaraf bin/client feature:install odl-netconf-connector-all

The command 5 will be rejected with "Failed to get the session".

The same happens if in step 3 you say "odl-netconf-mdsal".

However the sequence works when you run "bin/karaf" at the step 1 and enter the "feature:install" commands at the karaf console prompt instead of using the karaf client.

The logs show "Duplicate interface name in class file Proxy

" (see attached file).