Add Kafka Opsrequest and Autoscaler Docs

Signed-off-by: obaydullahmhs <[email protected]>

docs/examples/kafka/configuration/configsecret-combined.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: configsecret-combined
+  namespace: demo
+stringData:
+  server.properties: |-
+    log.retention.hours=100
+    default.replication.factor=2

docs/examples/kafka/configuration/configsecret-topology.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: configsecret-topology
+  namespace: demo
+stringData:
+  broker.properties: |-
+    log.retention.hours=100
+    default.replication.factor=2
+  controller.properties: |-
+    metadata.log.dir=/var/log/kafka/metadata-custom

docs/examples/kafka/configuration/kafka-combined.yaml

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+apiVersion: kubedb.com/v1
+kind: Kafka
+metadata:
+  name: kafka-dev
+  namespace: demo
+spec:
+  replicas: 2
+  version: 3.6.1
+  podTemplate:
+    spec:
+      containers:
+      - name: kafka
+        resources:
+          limits:
+            cpu: 1
+            memory: 2Gi
+          requests:
+            cpu: 500m
+            memory: 1Gi
+  storage:
+    accessModes:
+      - ReadWriteOnce
+    resources:
+      requests:
+        storage: 1Gi
+    storageClassName: standard
+  storageType: Durable
+  deletionPolicy: DoNotTerminate

docs/examples/kafka/configuration/kafka-topology.yaml

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+apiVersion: kubedb.com/v1
+kind: Kafka
+metadata:
+  name: kafka-prod
+  namespace: demo
+spec:
+  version: 3.6.1
+  configSecret:
+    name: configsecret-topology
+  topology:
+    broker:
+      replicas: 2
+      podTemplate:
+        spec:
+          containers:
+            - name: kafka
+              resources:
+                requests:
+                  cpu: "500m"
+                  memory: "1Gi"
+      storage:
+        accessModes:
+          - ReadWriteOnce
+        resources:
+          requests:
+            storage: 1Gi
+        storageClassName: standard
+    controller:
+      replicas: 2
+      podTemplate:
+        spec:
+          containers:
+            - name: kafka
+              resources:
+                requests:
+                  cpu: "500m"
+                  memory: "1Gi"
+      storage:
+        accessModes:
+          - ReadWriteOnce
+        resources:
+          requests:
+            storage: 1Gi
+        storageClassName: standard
+  storageType: Durable
+  deletionPolicy: WipeOut

docs/examples/kafka/restart/kafka.yaml

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+apiVersion: kubedb.com/v1
+kind: Kafka
+metadata:
+  name: kafka-prod
+  namespace: demo
+spec:
+  version: 3.6.1
+  topology:
+    broker:
+      replicas: 2
+      podTemplate:
+        spec:
+          containers:
+            - name: kafka
+              resources:
+                requests:
+                  cpu: "500m"
+                  memory: "1Gi"
+      storage:
+        accessModes:
+          - ReadWriteOnce
+        resources:
+          requests:
+            storage: 1Gi
+        storageClassName: standard
+    controller:
+      replicas: 2
+      podTemplate:
+        spec:
+        containers:
+          - name: kafka
+            resources:
+            requests:
+              cpu: "500m"
+              memory: "1Gi"
+      storage:
+        accessModes:
+          - ReadWriteOnce
+        resources:
+          requests:
+            storage: 1Gi
+        storageClassName: standard
+  storageType: Durable
+  deletionPolicy: DoNotTerminate

docs/examples/kafka/restart/ops.yaml

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+apiVersion: ops.kubedb.com/v1alpha1
+kind: KafkaOpsRequest
+metadata:
+  name: restart
+  namespace: demo
+spec:
+  type: Restart
+  databaseRef:
+    name: kafka-prod
+  timeout: 5m
+  apply: Always