Update security_group_api param

The security_group_api value now should either be nova or quantum depending
if one is using nova security groups or quantum security groups. When set to
quantum all nova security group api requests are proxied to quantum.

Change-Id: Ib619ac3ce8face0cea59f9de145562bd6e8e1762
Update SUSE Linux/openSUSE Instructions

Simplify setup steps for setting up repositories and use new repository layout.

Change-Id: I8077616985e5bda207615a81cd8631b1b2cbeefd
add nova-conductor into restart section

Bug #1182477

Change-Id: Icd307e6fef45fb15b6b1704fd56e0272f3e2856e
Merge "Update SUSE Linux/openSUSE Instructions"
Merge "Update security_group_api param"