Log stacktrace when replication fails

Stack trace provides useful information to better understand what caused
the issue

Change-Id: Id3c4abe1e1ac05ce60bca401bb91bc47a14cbe7c

src/main/java/com/googlesource/gerrit/plugins/replication/pull/FetchOne.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/pull/FetchOne.java b/src/main/java/com/googlesource/gerrit/plugins/replication/pull/FetchOne.java
index 370f2fb..1493c13 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/pull/FetchOne.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/pull/FetchOne.java
@@ -376,7 +376,7 @@
       repLog.error(
           String.format("Terminal failure. Cannot replicate [%s] from %s", taskIdHex, uri), e);
     } catch (TransportException e) {
-      repLog.error("[{}] Cannot replicate from {}: {}", taskIdHex, uri, e.getMessage());
+      repLog.error(String.format("[%s] Cannot replicate from %s", taskIdHex, uri), e);
       if (replicationType == ReplicationType.ASYNC && e instanceof LockFailureException) {
         lockRetryCount++;
         // The LockFailureException message contains both URI and reason