Minor: fix MM2 TLS example (#12160)

Signed-off-by: Federico Valeri <fedevaleri@gmail.com>

Author: fvaleri

packaging/examples/mirror-maker/kafka-mirror-maker-2-tls.yaml

@@ -25,9 +25,10 @@ spec:
   - source:
       alias: cluster-a
       bootstrapServers: cluster-a-kafka-bootstrap:9093
-      trustedCertificates:
-        - secretName: cluster-a-cluster-ca-cert
-          pattern: "*.crt"
+      tls:
+        trustedCertificates:
+          - secretName: cluster-a-cluster-ca-cert
+            pattern: "*.crt"
     sourceConnector:
       tasksMax: 1
       config:

packaging/examples/security/scram-sha-512-auth/mirror-maker-2.yaml

@@ -252,9 +252,10 @@ spec:
     - source:
         alias: cluster-a
         bootstrapServers: cluster-a-kafka-bootstrap:9093
-        trustedCertificates:
-          - secretName: cluster-a-cluster-ca-cert
-            pattern: "*.crt"
+        tls:
+          trustedCertificates:
+            - secretName: cluster-a-cluster-ca-cert
+              pattern: "*.crt"
         authentication:
           type: scram-sha-512
           username: cluster-a-user

packaging/examples/security/tls-auth/mirror-maker-2.yaml

@@ -243,9 +243,10 @@ spec:
     - source:
         alias: cluster-a
         bootstrapServers: cluster-a-kafka-bootstrap:9093
-        trustedCertificates:
-          - secretName: cluster-a-cluster-ca-cert
-            pattern: "*.crt"
+        tls:
+          trustedCertificates:
+            - secretName: cluster-a-cluster-ca-cert
+              pattern: "*.crt"
         authentication:
           type: tls
           certificateAndKey: