Accept null properties

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1600870 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/test/resources/launcher-test.crank.txt b/src/test/resources/launcher-test.crank.txt
index 6376370..f302721 100644
--- a/src/test/resources/launcher-test.crank.txt
+++ b/src/test/resources/launcher-test.crank.txt
@@ -63,6 +63,8 @@
   service.ranking.launcher.test=I"54321"
   array=["foo","bar.from.launcher.test"]
   
+config empty.config.should.work FORMAT:felix.config
+  
 # Test an extension command provided by our test-services bundle
 test.system.property the.test.system.property was set by test-services bundle