vdscli: no need to generate using autoconf

.in files are cumbersome and non-pythonic. As such, they should be
avoided when possible. The only autoconf-related value in vdscli was the
default value for the trust store. This value is already available from
config.py, which is still auto-confingured.

Change-Id: I13059d101068cf6fa292baae4fb93ccf0b30db45
Signed-off-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/28676
Reviewed-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Reviewed-by: Nir Soffer <nsoffer@redhat.com>