zabbix: Move commonly used docs to doc fragments (#31833)

* Move commonly used configuration parameter documentation for zabbix_*-modules to cental doc fragment

* fix indentation

lib/ansible/utils/module_docs_fragments/zabbix.py

@@ -21,6 +21,36 @@ class ModuleDocFragment(object):
     # Standard documentation fragment
     DOCUMENTATION = '''
 options:
+    server_url:
+        description:
+            - Url of Zabbix server, with protocol (http or https).
+              C(url) is an alias for C(server_url).
+        required: true
+        aliases: [ "url" ]
+    login_user:
+        description:
+            - Zabbix user name.
+        required: true
+    login_password:
+        description:
+            - Zabbix user password.
+        required: true
+    http_login_user:
+        description:
+            - Basic Auth login
+        required: false
+        default: None
+        version_added: "2.1"
+    http_login_password:
+        description:
+            - Basic Auth password
+        required: false
+        default: None
+        version_added: "2.1"
+    timeout:
+        description:
+            - The timeout of API request(seconds).
+        default: 10
     validate_certs:
       required: false
       description: