debian: Fix the package version number to be native

`build-snapshot` was complaining about the debian revision in the
changelog entry.

Signed-off-by: Emanuele Aina <emanuele.aina@collabora.com>
Reviewed-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Differential Revision: https://phabricator.apertis.org/D5680

debian/changelog

-apertis-eclipse-plugins (0.1703.0-1) 17.03; urgency=medium
+apertis-eclipse-plugins (0.1703.0.1) 17.03; urgency=medium
 
   * debian/control: Add missing runtime dependencies that caused the plugin to
     be silently ignored by Eclipse at startup when not available.