Added Data Networks toctree
Changed case on doc title in top level index - changed doc directory to
fault-mgmt.
Added Distributed Cloud section.
Broke out "OpenStack Fault Management Overview" statement about remote log
collection to conditionally included file.
Incorporated patch 6 review comments. Also implemented rST :abbr:
for first instance of SNMP in each file.
Changed port number and community string in two SNMP walk examples.
Change-Id: I1afd71265e752c4c9a54bf2dc9a173b3e17332a7
Signed-off-by: Stone <ronald.stone@windriver.com>