Reorg, updates and troubleshooting guide

- Expanded hw install
- Change fabric switch bootstrap to DHCP/HTTP based ONL install
- Start of operations and troubleshooting guide
- Various grammar/spelling fixes, dictionary expansion

Change-Id: I9b30d63a97e4443ea3871ee880646e161de8969a
diff --git a/conf.py b/conf.py
index c28c9a9..0455fd8 100644
--- a/conf.py
+++ b/conf.py
@@ -245,6 +245,7 @@
 # -- options for Intersphinx extension ---------------------------------------
 
 intersphinx_mapping = {
+    'ansible': ('https://docs.ansible.com/ansible/latest', None),
     'sphinx': ('https://www.sphinx-doc.org/en/master', None),
     'trellis': ('https://docs.trellisfabric.org/master', None),
     }