Correct sample zuul.conf

And add missing zuul.conf config entries.

Change-Id: I776826e7ff1fff2edd6f6d332c20a24af1a4eb58
diff --git a/doc/source/admin/components.rst b/doc/source/admin/components.rst
index c77c0fc..4e2e889 100644
--- a/doc/source/admin/components.rst
+++ b/doc/source/admin/components.rst
@@ -51,6 +51,18 @@
 **ssl_key**
   Optional: An openssl file containing the client private key in PEM format.
 
+zuul
+""""
+
+**status_url**
+  URL that will be posted in Zuul comments made to changes when
+  starting jobs for a change.  Used by zuul-scheduler only.
+  ``status_url=https://zuul.example.com/status``
+
+**zookeeper_hosts**
+  A list of zookeeper hosts for Zuul to use when communicating with
+  Nodepool.  ``zookeeper_hosts=zk1.example.com,zk2.example.com,zk3.example.com``
+
 
 Scheduler
 ---------
diff --git a/etc/zuul.conf-sample b/etc/zuul.conf-sample
index 2909ea6..9d74a3b 100644
--- a/etc/zuul.conf-sample
+++ b/etc/zuul.conf-sample
@@ -11,12 +11,14 @@
 ;ssl_key=/path/to/server.key
 
 [zuul]
-layout_config=/etc/zuul/layout.yaml
+status_url=https://zuul.example.com/status
+zookeeper_hosts=127.0.0.1:2181
+
+[scheduler]
+tenant_config=/etc/zuul/main.yaml
 log_config=/etc/zuul/logging.conf
 pidfile=/var/run/zuul/zuul.pid
 state_dir=/var/lib/zuul
-status_url=https://jenkins.example.com/zuul/status
-zookeeper_hosts=127.0.0.1:2181
 
 [merger]
 git_dir=/var/lib/zuul/git