Dependency added to executor to fix Bug 499978: Executor's Launch config stops with exception

Signed-off-by: balaskoa <jeno.balasko@ericsson.com>

org.eclipse.titan.executor/META-INF/MANIFEST.MF

@@ -8,8 +8,9 @@ Bundle-Version: 5.5.0.CRL_113_200_5_R5A_20160422-1100
 Bundle-Activator: org.eclipse.titan.executor.Activator
 Require-Bundle: org.eclipse.ui,
  org.eclipse.core.runtime;bundle-version="3.5.0",
- org.eclipse.debug.core,
+ org.eclipse.core.filesystem,
  org.eclipse.core.resources,
+ org.eclipse.debug.core,
  org.eclipse.ui.console,
  org.eclipse.core.variables,
  org.eclipse.debug.ui,