fix api naming inconsistency (#1928)

Signed-off-by: Adrian Sutton <adrian.sutton@consensys.net>

pantheon/src/main/java/tech/pegasys/pantheon/services/PantheonEventsImpl.java

@@ -34,7 +34,7 @@ public class PantheonEventsImpl implements PantheonEvents {
   @Override
   public long addBlockPropagatedListener(final BlockPropagatedListener listener) {
     return blockBroadcaster.subscribePropagateNewBlocks(
-        block -> listener.newBlockPropagated(block.getHeader()));
+        block -> listener.onBlockPropagated(block.getHeader()));
   }
 
   @Override

plugin-api/build.gradle

@@ -56,7 +56,7 @@ Calculated : ${currentHash}
 tasks.register('checkAPIChanges', FileStateChecker) {
   description = "Checks that the API for the Plugin-API project does not change without deliberate thought"
   files = sourceSets.main.allJava.files
-  knownHash = '1VkUKHRqmT1ONtvrqRz0VNCA1uqSopK0RAnNdmCM6vc='
+  knownHash = 'xJ1uQYYa5Z4h7qIVsKMLsUFHAjj4FXAeyCtX6PY4z0g='
 }
 check.dependsOn('checkAPIChanges')
 

plugin-api/src/main/java/tech/pegasys/pantheon/plugin/services/PantheonEvents.java

@@ -109,7 +109,7 @@ public interface PantheonEvents {
      *
      * @param blockHeader the new block header.
      */
-    void newBlockPropagated(BlockHeader blockHeader);
+    void onBlockPropagated(BlockHeader blockHeader);
   }
 
   /** The listener interface for receiving new transaction added events. */