It turns out that the FELIX-3337 issue is actually invalid, and the bug was in the test itself, not in the dependencymanager. Fixed the test in order to not change the S1 testkey=testvalue property, when updating S1 PID from config admin
felix/trunk/dependencymanager/test/src/test/java/org/apache/felix/dm/test/FELIX3337_UpdatedConfigurationDependencyWithPropagationTest.java