[install]prompt to complete verifying on controller node

backport:Liberty

Change-Id: I282da0cadcbb4377c6a0b0f2e2b69f2bdab7aa2b
Closes-Bug: #1547323

doc/install-guide/source/glance-verify.rst

@@ -12,6 +12,10 @@ For information about how to manage images, see the
 `OpenStack User Guide
 <http://docs.openstack.org/user-guide/common/cli_manage_images.html>`__.
 
+.. note::
+
+   Perform these commands on the controller node.
+
 #. In each client environment script, configure the Image service
    client to use API version 2:
 

doc/install-guide/source/heat-verify.rst

@@ -5,6 +5,10 @@ Verify operation
 
 Verify operation of the Orchestration service.
 
+.. note::
+
+   Perform these commands on the controller node.
+
 #. Source the ``admin`` tenant credentials:
 
    .. code-block:: console

doc/install-guide/source/keystone-verify.rst

@@ -4,6 +4,10 @@ Verify operation
 Verify operation of the Identity service before installing other
 services.
 
+.. note::
+
+   Perform these commands on the controller node.
+
 .. only:: obs or ubuntu
 
    #. For security reasons, disable the temporary authentication

doc/install-guide/source/neutron-verify.rst

@@ -1,6 +1,10 @@
 Verify operation
 ~~~~~~~~~~~~~~~~
 
+.. note::
+
+   Perform these commands on the controller node.
+
 #. Source the ``admin`` credentials to gain access to admin-only CLI
    commands: