STORM-3644 update pacemaker connection error log
diff --git a/storm-client/src/jvm/org/apache/storm/pacemaker/PacemakerClient.java b/storm-client/src/jvm/org/apache/storm/pacemaker/PacemakerClient.java
index 298524e..4d8e6b5 100644
--- a/storm-client/src/jvm/org/apache/storm/pacemaker/PacemakerClient.java
+++ b/storm-client/src/jvm/org/apache/storm/pacemaker/PacemakerClient.java
@@ -182,7 +182,7 @@
                     if (retry <= 0) {
                         throw e;
                     }
-                    LOG.error("error attempting to write to a channel {}.", e.getMessage());
+                    LOG.error("Error attempting to write to a channel to host {} - {}", host, e.getMessage());
                 }
                 if (retry <= 0) {
                     throw new PacemakerConnectionException("couldn't get response after " + maxRetries + " attempts.");