Add labels, update to Pubsub Subscription/Topic (#191)

Signed-off-by: Modular Magician <magic-modules@google.com>

plugins/modules/gcp_pubsub_subscription_facts.py

@@ -67,6 +67,11 @@ items:
       - A reference to a Topic resource.
       returned: success
       type: str
+    labels:
+      description:
+      - A set of key/value label pairs to assign to this Subscription.
+      returned: success
+      type: dict
     pushConfig:
       description:
       - If push delivery is used with this subscription, this field is used to configure
@@ -81,6 +86,26 @@ items:
           - For example, a Webhook endpoint might use "U(https://example.com/push".)
           returned: success
           type: str
+        attributes:
+          description:
+          - Endpoint configuration attributes.
+          - Every endpoint has a set of API supported attributes that can be used
+            to control different aspects of the message delivery.
+          - The currently supported attribute is x-goog-version, which you can use
+            to change the format of the pushed message. This attribute indicates the
+            version of the data expected by the endpoint. This controls the shape
+            of the pushed message (i.e., its fields and metadata). The endpoint version
+            is based on the version of the Pub/Sub API.
+          - If not present during the subscriptions.create call, it will default to
+            the version of the API used to make such call. If not present during a
+            subscriptions.modifyPushConfig call, its value will not be changed. subscriptions.get
+            calls will always return a valid version, even if the subscription was
+            created without this attribute.
+          - 'The possible values for this attribute are: - v1beta1: uses the push
+            format defined in the v1beta1 Pub/Sub API.'
+          - "- v1 or v1beta2: uses the push format defined in the v1 Pub/Sub API."
+          returned: success
+          type: dict
     ackDeadlineSeconds:
       description:
       - This value is the maximum time after a subscriber receives a message before