Upgrade odlparent and drop ${junit.version}
Upgrade odlparent and drop ${junit.version}

The current version of odlparent is 1.6.0-SNAPSHOT. odlparent provides
junit in its dependency management, so specifying the version in
libopflex-metadata's pom.xml is unnecessary (and ${junit.version}
comes from odlparent anyway).

Change-Id: I986f9ae8931feccb26488f6ae0ac99fa4b22972d
Signed-off-by: Stephen Kitt <c64219c0e25aff6572376b1dfbf7cf444494f5c6@redhat.com>

mhrobinson/opflex,opendaylight/opflex,mhrobinson/opflex,mhrobinson/opflex,opendaylight/opflex,opendaylight/opflex,mhrobinson/opflex,opendaylight/opflex