vultr: new module utils and common docs (#30868)

* vultr: new module utils and common docs

* vultr: minor fixes after review

lib/ansible/utils/module_docs_fragments/vultr.py

@@ -0,0 +1,39 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2017 René Moser <mail@renemoser.net>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+
+class ModuleDocFragment(object):
+
+    # Standard documentation fragment
+    DOCUMENTATION = '''
+options:
+  api_key:
+    description:
+      - API key of the Vultr API.
+      - The ENV variable C(VULTR_API_KEY) is used as default, when defined.
+  api_timeout:
+    description:
+      - HTTP timeout to Vultr API.
+      - The ENV variable C(VULTR_API_TIMEOUT) is used as default, when defined.
+    default: 10
+  api_retries:
+    description:
+      - Amount of retries in case of the Vultr API retuns an HTTP 503 code.
+      - The ENV variable C(VULTR_API_RETRIES) is used as default, when defined.
+    default: 10
+  api_account:
+    description:
+      - Name of the ini section in the C(vultr.ini) file.
+      - The ENV variable C(VULTR_API_ACCOUNT) is used as default, when defined.
+    default: default
+  validate_certs:
+    description:
+      - Validate SSL certs of the Vultr API.
+    default: true
+    type: bool
+requirements:
+  - "python >= 2.6"
+notes:
+  - Also see the API documentation on https://www.vultr.com/api/.
+'''