CA install: explicitly set dogtag_version to 10
When installing new CA master, explicitly set the dogtag_version option to
10 in api.bootstrap() to prevent failures in code which expects the value
to be 10 rather than the default value of 9.
https://fedorahosted.org/freeipa/ticket/5611
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>