One more change in Consumer API.  Now there are more consumers and they
behave slightly differently (CcnxConsumerCbr accepts only Frequency parameter)

More corrections in blackhole-sprint scenario
diff --git a/examples/base-experiment.h b/examples/base-experiment.h
index c00c127..fd8c1f0 100644
--- a/examples/base-experiment.h
+++ b/examples/base-experiment.h
@@ -111,8 +111,8 @@
       {
         guard ++;
 
-        uint32_t node1_num = m_rand.GetValue ();
-        uint32_t node2_num = m_rand.GetValue ();
+        uint32_t node1_num = m_rand.GetValue (); //43;//
+        uint32_t node2_num = m_rand.GetValue (); //38;//
 
         if (node1_num == node2_num)
           continue;