docs: Experimental features note about ceilometer

Starting with Danube.1.0, Ceilometer and MongoDB are experimental
in upstream Fuel@Openstack, so the appropiate feature group needs
to be enabled during master node installation to use them.

Change-Id: Ib522c7e81cc73625128296873b4f9eef7cf1e99d
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/release/installation/installation.instruction.rst b/docs/release/installation/installation.instruction.rst
index e24fe27..ee03c2e 100644 (file)
--- a/docs/release/installation/installation.instruction.rst
+++ b/docs/release/installation/installation.instruction.rst
@@ -269,7 +269,7 @@ Install Fuel master
    the OPNFV bootstrap build scripts and will lead to a failed bootstrap
    image build.
 
-   **NOTE:** Cannot be used in tandem with local repository support.
+   **NOTE**: Cannot be used in tandem with local repository support.
 
    .. figure:: img/fuelmenu5.png
 
@@ -283,6 +283,10 @@ Install Fuel master
 
    .. figure:: img/fuelmenu6.png
 
+#. In the "Feature groups" section - Enable "Experimental features" if you plan on using Ceilometer and/or MongoDB.
+
+   **NOTE**: Ceilometer and MongoDB are experimental features starting with Danube.1.0.
+
 #. Start the installation.
 
    - Press <F8>