Update camel examples to reflect recent changes (#1976)

docs/eventing/samples/apache-camel-source/source_http_poller.yaml

@@ -20,6 +20,7 @@ spec:
               name: Content-Type
               constant: application/json
   sink:
-    apiVersion: messaging.knative.dev/v1alpha1
-    kind: InMemoryChannel
-    name: camel-test
+    ref:
+      apiVersion: messaging.knative.dev/v1alpha1
+      kind: InMemoryChannel
+      name: camel-test

docs/eventing/samples/apache-camel-source/source_mqtt.yaml

@@ -26,6 +26,7 @@ spec:
           - log:
               message: "Forwarding: ${body}"
   sink:
-    apiVersion: messaging.knative.dev/v1alpha1
-    kind: InMemoryChannel
-    name: camel-test
+    ref:
+      apiVersion: messaging.knative.dev/v1alpha1
+      kind: InMemoryChannel
+      name: camel-test

docs/eventing/samples/apache-camel-source/source_telegram.yaml

@@ -29,6 +29,7 @@ spec:
           - transform:
               simple: "${body.text}"
   sink:
-    apiVersion: messaging.knative.dev/v1alpha1
-    kind: InMemoryChannel
-    name: camel-test
+    ref:
+      apiVersion: messaging.knative.dev/v1alpha1
+      kind: InMemoryChannel
+      name: camel-test

docs/eventing/samples/apache-camel-source/source_timer.yaml

@@ -22,6 +22,7 @@ spec:
           - set-body:
               constant: Hello world!
   sink:
-    apiVersion: messaging.knative.dev/v1alpha1
-    kind: InMemoryChannel
-    name: camel-test
+    ref:
+      apiVersion: messaging.knative.dev/v1alpha1
+      kind: InMemoryChannel
+      name: camel-test