Fix: turn off the verbose info level logging msg at openstacknode

Change-Id: I65fe35d16ac4e2cf5d008cdeb8e47cec5464b856
(cherry picked from commit 32a0de6)

Author: gunine

apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/web/OpenstackNodeWebResource.java

@@ -254,7 +254,7 @@ public Response initAllNodes() {
     @Produces(MediaType.APPLICATION_JSON)
     @Path("init/incomplete")
     public Response initIncompleteNodes() {
-        log.info(String.format(MESSAGE_NODE, INIT));
+        log.debug(String.format(MESSAGE_NODE, INIT));
 
         osNodeService.nodes().stream()
                 .filter(n -> n.state() != COMPLETE)