ureport: include AuthDataItems if SSLClientAuth is configured

Forcing users to configure more than one configuration option to enable
Authenticated uReporting isn't good idea. So for sake of simplicity
reporter-ureport will add the AuthDataItems in to an uReport by default
if the SSLClientAuth is set to some value. Putting 'no' to
the IncludeAuthData configuration option, stops reporter-ureport from
including the AuthDataItems in uReports.

Related to rhbz#1139557

Signed-off-by: Jakub Filak <jfilak@redhat.com>