[559231] Bump the metamodel version to 1.0.3 The addition of a new enum value should be reflected in the metamodel's nsURI. Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=559231 Change-Id: Icc4a8f88d13a70c04cefaa753af3131bd586b859 Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>