Cleanup section_nova-conf.xml

With the addition of section_config_format, we can now remove
section_nova-conf.xml. It was the only section in the guide that
documented the INI format.

Move some content from section_nova-conf.xml to
section_config_format.xml and update both as appropriate.

Also, update section_config_format.xml to use spaces around "=" and to
not chunk the sections.

Change-Id: I41f6e919bf996cb28a6f1ca4425752a653a3f81f
fixed typos found by topy in image-guide directory

Topy is available at https://github.com/intgr/topy.

Change-Id: I3d61c4ce963b0dce0d6324dbf18a5a1260621d58
Persistent selinux setting for horizon

Use the -P switch to make the httpd_can_network_connect selinux setting
persistent.

Change-Id: Id8f72336460f18569149be08a41bb1a7dd955156
Closes-Bug: #1313243
Merge "Cleanup section_nova-conf.xml"
Merge "fixed typos found by topy in image-guide directory"
Merge "Persistent selinux setting for horizon"