[FAB-8012] Upgrade Tutorial Doc

Upgrading network components. Also steps to enable capabilities.
Staged here: http://joestaging-fabric.readthedocs.io/en/latest/upgrade_your_network_components_tutorial.html
Note that staging might lag behind newest patch sets.
[ci-skip]

Change-Id: Idcdb8e3293ddadfe3888f4c41e37d80b77665c03
Signed-off-by: joe-alewine <Joe.Alewine@ibm.com>
Signed-off-by: Jason Yellick <jyellick@us.ibm.com>
Signed-off-by: Luis Sanchez <sanchezl@us.ibm.com>
Signed-off-by: Kostas Christidis <kostas@christidis.io>

Author: joe-alewine

docs/source/index.rst

@@ -55,7 +55,8 @@ Business:
 
    build_network
    write_first_app
-   channel_update_tutorial
+   channel_update
+   upgrading_your_network_tutorial
    chaincode
    chaincode4ade
    chaincode4noah
@@ -113,6 +114,7 @@ Business:
    :caption: Troubleshooting and FAQs
 
    Fabric-FAQ
+   ordering-service-faq
 
 .. toctree::
    :maxdepth: 2
@@ -141,4 +143,4 @@ Business:
    status
 
 .. Licensed under Creative Commons Attribution 4.0 International License
-   https://creativecommons.org/licenses/by/4.0/
+   https://creativecommons.org/licenses/by/4.0/