This is required by yangide so that in-workspace cross-project *.yang
references are correctly resolved; see
https://lists.opendaylight.org/pipermail/yangtools-dev/2016-May/001383.html
thread.
Change-Id: I81d07a94660bffea1953b949f507e62a7eaef4ee Signed-off-by: Michael Vorburger <vorburger@redhat.com>