Use bitnamilegacy repository for kafka and mondodb subcharts

Change-Id: I3115f1e7178030b740b4fdadeb543a5d99cc890f
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/installers/helm/osm/values.yaml b/installers/helm/osm/values.yaml
index f60782d..6749f8f 100644
--- a/installers/helm/osm/values.yaml
+++ b/installers/helm/osm/values.yaml
@@ -279,6 +279,10 @@
 
 kafka:
   enabled: true
+  image:
+    registry: docker.io
+    repository: bitnamilegacy/kafka
+    tag: 3.8.0-debian-12-r5
   listeners:
     client:
       protocol: "PLAINTEXT"
@@ -345,6 +349,10 @@
 
 mongodb:
   enabled: true
+  image:
+    registry: docker.io
+    repository: bitnamilegacy/mongodb
+    tag: 6.0.5-debian-11-r4
   fullnameOverride: "mongodb-k8s"
   replicaCount: 1
   service: