Update the Mariadb template to support the mariadb-operator
version 0.27.0, which changed the CRD naming and the content
structure.
Temporarily disable istio-sidecar, as problems with init jobs
for MariaDB
Issue-ID: OOM-3281
Change-Id: Ia9563a5074a739e4b879a7840bedb1d73fbc1b54 Signed-off-by: Andreas Geissler <andreas-geissler@telekom.de>