debian: Bump the changelog version

Although this master branch doesn't contain 3.0.2 since we moved passed that
it didn't feel apprioriate to bump the version to 4.0.0 (yet).

This file should be updated to 4.0.0 at the point where we release 4.0

debian/changelog

@@ -1,3 +1,9 @@
+cloud (3.0.2) unstable; urgency=low
+
+  * Bumping the package version to the latest release.
+
+ -- Wido den Hollander <wido@widodh.nl>  Wed, 25 Jul 2012 14:53:31 +0200
+
 cloud (2.2.2) unstable; urgency=low
 
   * Bumping version number for next CloudStack release