Merge branch 'stable-3.9' into stable-3.10

* stable-3.9:
  Fix incorrect documentation about excludeRefs
  Document replicateHiddenProjects setting
  Log stacktrace when replication fails

Change-Id: I2eb283eb0ec6f3188947617c43269b60ae872be7

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 bad77d3..042ae0f 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
@@ -391,7 +391,7 @@
       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

src/main/resources/Documentation/config.md

diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index 74648eb..546df2e 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -286,12 +286,6 @@
     the ref `foo/bar`, but no other refs.
 
     By default, the following refs are excluded from the git fetch calls:
-    - refs/users/*
-    - refs/meta/config
-    - refs/sequences/*
-    - refs/meta/external-ids
-    - refs/groups/*
-    - refs/meta/group-names
     - refs/cache-automerge/*
     - refs/starred-changes/*
 
@@ -531,6 +525,12 @@
 
 	By default, false, do *not* replicate project deletions.
 
+remote.NAME.replicateHiddenProjects
+:	If true, hidden projects will also be replicated to the
+remote site.
+
+	By default, false, do *not* replicate hidden projects.
+
 remote.NAME.mirror
 :	If true, replication will remove local branches and tags that are
 absent remotely or invisible to the replication (for example read access