Add module support to yamllint sanity test. (#34964)

* Add module support to yamllint sanity test.
* Fix duplicate keys in module RETURN docs.
* Fix syntax in return_common docs fragment.
* Fix duplicate keys in module EXAMPLES docs.

lib/ansible/modules/cloud/google/gce.py

@@ -199,7 +199,7 @@ EXAMPLES = '''
 # Create multiple instances by specifying multiple names, separated by
 # commas in the instance_names field
 # (e.g. my-test-instance1,my-test-instance2)
-    gce:
+  - gce:
       instance_names: my-test-instance1
       zone: us-central1-a
       machine_type: n1-standard-1
@@ -213,7 +213,7 @@ EXAMPLES = '''
 # Create a single instance of an image from the "my-base-image" image family
 # in the us-central1-a Zone of the n1-standard-1 machine type.
 # This image family is in the "my-other-project" GCP project.
-    gce:
+  - gce:
       instance_names: my-test-instance1
       zone: us-central1-a
       machine_type: n1-standard-1
@@ -229,7 +229,7 @@ EXAMPLES = '''
 # Create a single Debian 8 instance in the us-central1-a Zone
 # Use existing disks, custom network/subnetwork, set service account permissions
 # add tags and metadata.
-    gce:
+  - gce:
       instance_names: my-test-instance
       zone: us-central1-a
       machine_type: n1-standard-1

lib/ansible/modules/cloud/google/gce_eip.py

@@ -42,22 +42,22 @@ options:
 
 EXAMPLES = '''
 # Create a Global external IP address
-gce_eip:
-  service_account_email: "{{ service_account_email }}"
-  credentials_file: "{{ credentials_file }}"
-  project_id: "{{ project_id }}"
-  name: my-global-ip
-  region: global
-  state: present
+- gce_eip:
+    service_account_email: "{{ service_account_email }}"
+    credentials_file: "{{ credentials_file }}"
+    project_id: "{{ project_id }}"
+    name: my-global-ip
+    region: global
+    state: present
 
 # Create a Regional external IP address
-gce_eip:
-  service_account_email: "{{ service_account_email }}"
-  credentials_file: "{{ credentials_file }}"
-  project_id: "{{ project_id }}"
-  name: my-global-ip
-  region: us-east1
-  state: present
+- gce_eip:
+    service_account_email: "{{ service_account_email }}"
+    credentials_file: "{{ credentials_file }}"
+    project_id: "{{ project_id }}"
+    name: my-global-ip
+    region: us-east1
+    state: present
 '''
 
 RETURN = '''

lib/ansible/modules/cloud/google/gcpubsub_facts.py

@@ -45,20 +45,20 @@ options:
 
 EXAMPLES = '''
 ## List all Topics in a project
-gcpubsub_facts:
-  view: topics
-  state: list
+- gcpubsub_facts:
+    view: topics
+    state: list
 
 ## List all Subscriptions in a project
-gcpubsub_facts:
-  view: subscriptions
-  state: list
+- gcpubsub_facts:
+    view: subscriptions
+    state: list
 
 ## List all Subscriptions for a Topic in a project
-gcpubsub_facts:
-  view: subscriptions
-  topic: my-topic
-  state: list
+- gcpubsub_facts:
+    view: subscriptions
+    topic: my-topic
+    state: list
 '''
 
 RETURN = '''