Add Eclipse-BundleShape to directory bundles

org.eclipse.ui.intro.universal/META-INF/MANIFEST.MF

diff --git a/org.eclipse.ui.intro.universal/META-INF/MANIFEST.MF b/org.eclipse.ui.intro.universal/META-INF/MANIFEST.MF
index 1d64ce0..a00eac4 100644
--- a/org.eclipse.ui.intro.universal/META-INF/MANIFEST.MF
+++ b/org.eclipse.ui.intro.universal/META-INF/MANIFEST.MF
@@ -21,3 +21,4 @@
  org.w3c.dom,
  org.xml.sax
 Bundle-ActivationPolicy: lazy;exclude:="org.eclipse.ui.internal.intro.universal.contentdetect"
+Eclipse-BundleShape: dir