Fix merge for "Partial revert "Switch build to Apache Felix maven-bundle-plugin""

There was a missing dependency.

Change-Id: Ib7b9f05ee4c7c2bd7760ce44a7c2cd72759d514d
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>

org.eclipse.jgit.pgm/META-INF/MANIFEST.MF

@@ -7,6 +7,7 @@ Bundle-Vendor: %provider_name
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
 Import-Package: org.eclipse.jgit.awtui,
+ org.eclipse.jgit.diff,
  org.eclipse.jgit.dircache,
  org.eclipse.jgit.errors,
  org.eclipse.jgit.lib,