Add a couple log errors to whitelist.yaml

These log errors have hit the large ops jobs several times. There is one
in ceilometer acentral and one in nova conductor.

Change-Id: Idc30110085e95c615958fc5f90e86417855e6d7a
diff --git a/etc/whitelist.yaml b/etc/whitelist.yaml
index 1c12b6c..2d8b741 100644
--- a/etc/whitelist.yaml
+++ b/etc/whitelist.yaml
@@ -78,6 +78,8 @@
 ceilometer-acentral:
     - module: "ceilometer.central.manager"
       message: "403 Forbidden"
+    - module: "ceilometer.central.manager"
+      message: "get_samples\\(\\) got an unexpected keyword argument 'resources'"
 
 ceilometer-alarm-evaluator:
     - module: "ceilometer.alarm.service"
@@ -133,6 +135,8 @@
       message: "but the actual state is deleting to caller"
     - module: "nova.openstack.common.rpc.common"
       message: "Traceback \\(most recent call last"
+    - module: "nova.openstack.common.threadgroup"
+      message: "Service with host .* topic conductor exists."
 
 n-sch:
     - module: "nova.scheduler.filter_scheduler"