removing documentation fragment

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

plugins/modules/gcp_compute_backend_bucket.py

@@ -37,7 +37,7 @@ description:
   rather than a backend service. It can send requests for static content to a Cloud
   Storage bucket and requests for dynamic content a virtual machine instance.
 short_description: Creates a GCP BackendBucket
-version_added: 2.6
+version_added: '2.6'
 author: Google Inc. (@googlecloudplatform)
 requirements:
 - python >= 2.6
@@ -62,7 +62,7 @@ options:
     - Cloud CDN configuration for this Backend Bucket.
     required: false
     type: dict
-    version_added: 2.8
+    version_added: '2.8'
     suboptions:
       signed_url_cache_max_age_sec:
         description:
@@ -97,10 +97,56 @@ options:
       which cannot be a dash.
     required: true
     type: str
-extends_documentation_fragment: gcp
+  project:
+    description:
+    - The Google Cloud Platform project to use.
+    type: str
+  auth_kind:
+    description:
+    - The type of credential used.
+    type: str
+    required: true
+    choices:
+    - application
+    - machineaccount
+    - serviceaccount
+  service_account_contents:
+    description:
+    - The contents of a Service Account JSON file, either in a dictionary or as a
+      JSON string that represents it.
+    type: jsonarg
+  service_account_file:
+    description:
+    - The path of a Service Account JSON file if serviceaccount is selected as type.
+    type: path
+  service_account_email:
+    description:
+    - An optional service account email address if machineaccount is selected and
+      the user does not wish to use the default email.
+    type: str
+  scopes:
+    description:
+    - Array of scopes to be used
+    type: list
+  env_type:
+    description:
+    - Specifies which Ansible environment you're running this module within.
+    - This should not be set unless you know what you're doing.
+    - This only alters the User Agent string for any API requests.
+    type: str
 notes:
 - 'API Reference: U(https://cloud.google.com/compute/docs/reference/v1/backendBuckets)'
 - 'Using a Cloud Storage bucket as a load balancer backend: U(https://cloud.google.com/compute/docs/load-balancing/http/backend-bucket)'
+- for authentication, you can set service_account_file using the c(gcp_service_account_file)
+  env variable.
+- for authentication, you can set service_account_contents using the c(GCP_SERVICE_ACCOUNT_CONTENTS)
+  env variable.
+- For authentication, you can set service_account_email using the C(GCP_SERVICE_ACCOUNT_EMAIL)
+  env variable.
+- For authentication, you can set auth_kind using the C(GCP_AUTH_KIND) env variable.
+- For authentication, you can set scopes using the C(GCP_SCOPES) env variable.
+- Environment variables values will only be used if the playbook values are not set.
+- The I(service_account_email) and I(service_account_file) options are mutually exclusive.
 '''
 
 EXAMPLES = '''