[MARIADB] Set mTLS mode to STRICT to solve mysql connection issues

The DISABLE setting for mysql ports lead to failing mysql connections
therefor STRICT is used to fix initial connections
see (https://istio.io/latest/about/faq/#mysql-with-mtls)

Issue-ID: OOM-3236

Change-Id: I56c34400dc73c71b936a51260efd776349adaeae
Signed-off-by: Andreas Geissler <andreas-geissler@telekom.de>
diff --git a/kubernetes/common/mariadb-galera/templates/service.yaml b/kubernetes/common/mariadb-galera/templates/service.yaml
index 4cabde1..2dea4e9 100644
--- a/kubernetes/common/mariadb-galera/templates/service.yaml
+++ b/kubernetes/common/mariadb-galera/templates/service.yaml
@@ -34,6 +34,6 @@
       app: {{ include "common.servicename" . }}
   portLevelMtls:
     '{{ .Values.service.internalPort }}':
-      mode: DISABLE
+      mode: STRICT
 {{-   end }}
 {{- end }}