Mozilla bootstrap driver is used in xmlsecurity to discover default
profile and induce the path to the public keys file location from
certification authorities. The same profile discovery code is used
in mork driver. Remove duplicated code and re-use the service from
mozilla bootstrap driver in mork driver.

Change-Id: I6bc271ccf75e89eb81767186ddd9078c1f64b73d
Reviewed-on: https://gerrit.libreoffice.org/20111Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>