<install scripts> Bug 970805 - Update install scripts to set ServerName

Updates the broker and node shipped config files to set ServerName to
the hostname instead of localhost.

Certificates were being generated with -extensions v3_req which cause
the self-signed certificates to be invalid (more so than normal
self-signed certificates) since they are not authorized for signing
certificates.
Remove oo-diagnostics since it has been merged into origin-server