cloudflare_dns: rollback validation for SRV records (#10937)

* cloudflare_dns: rollback validation for SRV records

* add changelog frag

Author: russoz

changelogs/fragments/10934-cloudflare-dns-srv-bug.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - cloudflare_dns - roll back changes to SRV record validation (https://github.com/ansible-collections/community.general/issues/10934, https://github.com/ansible-collections/community.general/pull/10937).

plugins/modules/cloudflare_dns.py

@@ -927,7 +927,7 @@ def main():
         required_if=[
             ('state', 'present', ['record', 'type', 'value']),
             ('state', 'absent', ['record']),
-            ('type', 'SRV', ['proto', 'service', 'value']),
+            ('type', 'SRV', ['proto', 'service']),
             ('type', 'TLSA', ['proto', 'port']),
             ('type', 'CAA', ['flag', 'tag', 'value']),
         ],
@@ -940,8 +940,11 @@ def main():
     )
 
     if module.params['type'] == 'SRV':
-        if not module.params['value'] == '':
-            module.fail_json(msg="For SRV records the params weight, port and value all need to be defined.")
+        if not ((module.params['weight'] is not None and module.params['port'] is not None
+                 and not (module.params['value'] is None or module.params['value'] == ''))
+                or (module.params['weight'] is None and module.params['port'] is None
+                    and (module.params['value'] is None or module.params['value'] == ''))):
+            module.fail_json(msg="For SRV records the params weight, port and value all need to be defined, or not at all.")
 
     if module.params['type'] == 'SSHFP':
         if not ((module.params['algorithm'] is not None and module.params['hash_type'] is not None