Avoid nil pointer for authorizationPolicy (#1246)

```yaml
broker:
  replicaCount: 1
  component: broker
  authorizationPolicy: null  # Explicitly set to null
```
Explicitly set to null will cause NPE.

Author: labuladong

charts/sn-platform-slim/templates/bookkeeper/bookkeeper-authorizationpolicy.yaml

@@ -10,11 +10,11 @@ metadata:
   namespace: {{ template "pulsar.namespace" . }}
 spec:
   rules:
-  - {{- if .Values.bookkeeper.authorizationPolicy.from }}
+  - {{- if and .Values.bookkeeper.authorizationPolicy .Values.bookkeeper.authorizationPolicy.from }}
     from:
 {{ toYaml .Values.bookkeeper.authorizationPolicy.from | indent 4 }}
     {{- end }}
-    {{- if .Values.bookkeeper.authorizationPolicy.to }}
+    {{- if and .Values.bookkeeper.authorizationPolicy .Values.bookkeeper.authorizationPolicy.to }}
     to:
 {{ toYaml .Values.bookkeeper.authorizationPolicy.to | indent 4 }}
     {{- else }}
@@ -39,11 +39,11 @@ metadata:
   namespace: {{ template "pulsar.namespace" . }}
 spec:
   rules:
-  - {{- if .Values.autorecovery.authorizationPolicy.from }}
+  - {{- if and .Values.autorecovery.authorizationPolicy .Values.autorecovery.authorizationPolicy.from }}
     from:
 {{ toYaml .Values.autorecovery.authorizationPolicy.from | indent 4 }}
     {{- end }}
-    {{- if .Values.autorecovery.authorizationPolicy.to }}
+    {{- if and .Values.autorecovery.authorizationPolicy .Values.autorecovery.authorizationPolicy.to }}
     to:
 {{ toYaml .Values.autorecovery.authorizationPolicy.to | indent 4 }}
     {{- else }}

charts/sn-platform-slim/templates/broker/broker-authorizationpolicy.yaml

@@ -10,11 +10,11 @@ metadata:
   namespace: {{ template "pulsar.namespace" . }}
 spec:
   rules:
-  - {{- if .Values.broker.authorizationPolicy.from }}
+  - {{- if and .Values.broker.authorizationPolicy .Values.broker.authorizationPolicy.from }}
     from:
 {{ toYaml .Values.broker.authorizationPolicy.from | indent 4 }}
     {{- end }}
-    {{- if .Values.broker.authorizationPolicy.to }}
+    {{- if and .Values.broker.authorizationPolicy .Values.broker.authorizationPolicy.to }}
     to:
 {{ toYaml .Values.broker.authorizationPolicy.to | indent 4 }}
     {{- else }}

charts/sn-platform-slim/templates/zookeeper/zookeeper-authorizationpolicy.yaml

@@ -10,11 +10,11 @@ metadata:
   namespace: {{ template "pulsar.namespace" . }}
 spec:
   rules:
-  - {{- if .Values.zookeeper.authorizationPolicy.from }}
+  - {{- if and .Values.zookeeper.authorizationPolicy .Values.zookeeper.authorizationPolicy.from }}
     from:
 {{ toYaml .Values.zookeeper.authorizationPolicy.from | indent 4 }}
     {{- end }}
-    {{- if .Values.zookeeper.authorizationPolicy.to }}
+    {{- if and .Values.zookeeper.authorizationPolicy .Values.zookeeper.authorizationPolicy.to }}
     to:
 {{ toYaml .Values.zookeeper.authorizationPolicy.to | indent 4 }}
     {{- else }}

charts/sn-platform/templates/bookkeeper/bookkeeper-authorizationpolicy.yaml

@@ -10,11 +10,11 @@ metadata:
   namespace: {{ template "pulsar.namespace" . }}
 spec:
   rules:
-  - {{- if .Values.bookkeeper.authorizationPolicy.from }}
+  - {{- if and .Values.bookkeeper.authorizationPolicy .Values.bookkeeper.authorizationPolicy.from }}
     from:
 {{ toYaml .Values.bookkeeper.authorizationPolicy.from | indent 4 }}
     {{- end }}
-    {{- if .Values.bookkeeper.authorizationPolicy.to }}
+    {{- if and .Values.bookkeeper.authorizationPolicy .Values.bookkeeper.authorizationPolicy.to }}
     to:
 {{ toYaml .Values.bookkeeper.authorizationPolicy.to | indent 4 }}
     {{- else }}
@@ -39,11 +39,11 @@ metadata:
   namespace: {{ template "pulsar.namespace" . }}
 spec:
   rules:
-  - {{- if .Values.autorecovery.authorizationPolicy.from }}
+  - {{- if and .Values.autorecovery.authorizationPolicy .Values.autorecovery.authorizationPolicy.from }}
     from:
 {{ toYaml .Values.autorecovery.authorizationPolicy.from | indent 4 }}
     {{- end }}
-    {{- if .Values.autorecovery.authorizationPolicy.to }}
+    {{- if and .Values.autorecovery.authorizationPolicy .Values.autorecovery.authorizationPolicy.to }}
     to:
 {{ toYaml .Values.autorecovery.authorizationPolicy.to | indent 4 }}
     {{- else }}

charts/sn-platform/templates/broker/broker-authorizationpolicy.yaml

@@ -10,11 +10,11 @@ metadata:
   namespace: {{ template "pulsar.namespace" . }}
 spec:
   rules:
-  - {{- if .Values.broker.authorizationPolicy.from }}
+  - {{- if and .Values.broker.authorizationPolicy .Values.broker.authorizationPolicy.from }}
     from:
 {{ toYaml .Values.broker.authorizationPolicy.from | indent 4 }}
     {{- end }}
-    {{- if .Values.broker.authorizationPolicy.to }}
+    {{- if and .Values.broker.authorizationPolicy .Values.broker.authorizationPolicy.to }}
     to:
 {{ toYaml .Values.broker.authorizationPolicy.to | indent 4 }}
     {{- else }}

charts/sn-platform/templates/zookeeper/zookeeper-authorizationpolicy.yaml

@@ -10,11 +10,11 @@ metadata:
   namespace: {{ template "pulsar.namespace" . }}
 spec:
   rules:
-  - {{- if .Values.zookeeper.authorizationPolicy.from }}
+  - {{- if and .Values.zookeeper.authorizationPolicy .Values.zookeeper.authorizationPolicy.from }}
     from:
 {{ toYaml .Values.zookeeper.authorizationPolicy.from | indent 4 }}
     {{- end }}
-    {{- if .Values.zookeeper.authorizationPolicy.to }}
+    {{- if and .Values.zookeeper.authorizationPolicy .Values.zookeeper.authorizationPolicy.to }}
     to:
 {{ toYaml .Values.zookeeper.authorizationPolicy.to | indent 4 }}
     {{- else }}