digital_ocean_domain: fix to allow updating the module param ip between calls (#42009)

* update the domain record with the new ip from params if resource exists

* fixes for pylint and pep8 checks

lib/ansible/modules/cloud/digital_ocean/digital_ocean_domain.py

@@ -134,10 +134,22 @@ class DoManager(DigitalOceanHelper, object):
         else:
             return json
 
-    def edit_domain_record(self):
-        params = {'name': self.domain_name}
-        resp = self.put('domains/%s/records/%s' % (self.domain_name, self.domain_id), data=params)
+    def edit_domain_record(self, record):
+        params = {'name': '@',
+                  'data': self.module.params.get('ip')}
+        resp = self.put('domains/%s/records/%s' % (self.domain_name, record['id']), data=params)
         status, json = self.jsonify(resp)
+
+        return json['domain_record']
+
+    def create_domain_record(self):
+        params = {'name': '@',
+                  'type': 'A',
+                  'data': self.module.params.get('ip')}
+
+        resp = self.post('domains/%s/records' % (self.domain_name), data=params)
+        status, json = self.jsonify(resp)
+
         return json['domain_record']
 
 
@@ -160,8 +172,11 @@ def core(module):
                 if record['name'] == "@" and record['type'] == 'A':
                     at_record = record
 
-            if not at_record['data'] == module.params.get('ip'):
-                do_manager.edit_domain_record()
+            if not at_record:
+                do_manager.create_domain_record()
+                module.exit_json(changed=True, domain=do_manager.find())
+            elif not at_record['data'] == module.params.get('ip'):
+                do_manager.edit_domain_record(at_record)
                 module.exit_json(changed=True, domain=do_manager.find())
             else:
                 module.exit_json(changed=False, domain=do_manager.domain_record())