1. Include CN in root CA (Synnefo Demo CA @ HOSTNAME). This way we
will be able to import several distinct CA's to our browsers under
the same Organization (Synnefo).

2. Let openssl decide a random serial number for the root CA.

3. Let the certificate have serial number 1 (instead of 100).

4. Include a script that updates the root CA and certificates
   locally (cd /root && ./create_root_ca.sh && ./update_root_ca.sh)

Signed-off-by: Dimitris Aragiorgis <dimitris.aragiorgis@gmail.com>