netconf features broken when used in int/dist compatible with all feature set

email discussion https://lists.opendaylight.org/pipermail/netconf-dev/2017-November/001502.html

the distribution-version feature was broken sometime between the first Nitrogen
release and our efforts to release Nitrogen SR1. This is a regression, in that sense,
and regressions are normally considered blockers.

when installing the integration projects compatible-with-all feature set, the problem
is seen. If only the individual features are installed, the version feature works. This may
be enough of a workaround to downgrade from blocker status, but not enough is known
yet as to the root problem.