manifest file was missing but apparentlyy no issue

Author: jantje

io.sloeber.tests/META-INF/MANIFEST.MF

@@ -9,5 +9,6 @@ Require-Bundle: io.sloeber.core,
  org.eclipse.cdt.core,
  org.eclipse.core.runtime,
  org.eclipse.core.resources,
- org.junit;bundle-version="4.12.0"
+ org.junit;bundle-version="4.12.0",
+ org.eclipse.osgi
 Bundle-ActivationPolicy: lazy