Workaround for cert-manager update spec issue (knative-extensions#3390)

I'm setting the fields to what cert-manager expects so that
we don't run into this issue cert-manager/cert-manager#6408

Signed-off-by: Pierangelo Di Pilato <pierdipi@redhat.com>

data-plane/config/broker-tls/broker-ingress-tls-certificate.yaml

@@ -26,12 +26,12 @@ spec:
       app.kubernetes.io/component: kafka-broker-receiver
       app.kubernetes.io/name: knative-eventing
 
-  duration: 2160h # 90d
-  renewBefore: 360h # 15d
+  # Use 0m0s so that we don't run into https://github.com/cert-manager/cert-manager/issues/6408 on the operator
+  duration: 2160h0m0s # 90d
+  renewBefore: 360h0m0s # 15d
   subject:
     organizations:
       - local
-  isCA: false
   privateKey:
     algorithm: RSA
     encoding: PKCS1

data-plane/config/channel-tls/channel-ingress-tls-certificate.yaml

@@ -26,12 +26,12 @@ spec:
       app.kubernetes.io/component: kafka-channel-receiver
       app.kubernetes.io/name: knative-eventing
 
-  duration: 2160h # 90d
-  renewBefore: 360h # 15d
+  # Use 0m0s so that we don't run into https://github.com/cert-manager/cert-manager/issues/6408 on the operator
+  duration: 2160h0m0s # 90d
+  renewBefore: 360h0m0s # 15d
   subject:
     organizations:
       - local
-  isCA: false
   privateKey:
     algorithm: RSA
     encoding: PKCS1

data-plane/config/sink-tls/sink-ingress-tls-certificate.yaml

@@ -26,12 +26,12 @@ spec:
       app.kubernetes.io/component: kafka-sink-receiver
       app.kubernetes.io/name: knative-eventing
 
-  duration: 2160h # 90d
-  renewBefore: 360h # 15d
+  # Use 0m0s so that we don't run into https://github.com/cert-manager/cert-manager/issues/6408 on the operator
+  duration: 2160h0m0s # 90d
+  renewBefore: 360h0m0s # 15d
   subject:
     organizations:
       - local
-  isCA: false
   privateKey:
     algorithm: RSA
     encoding: PKCS1