[sink.kafka] Make config more consistent with others. (#44)

Our newer sinks are using `ssl: bool` and `verify_ssl: bool`, use it
here.

docs/migrating.md

@@ -215,7 +215,7 @@ Use a `.kafka:Kafka` Sink.
 - `user`: moved to `client.username`.
 - `password`: moved to `client.password`.
 - `ssl`: moved to `client.ssl`.
-- `skip_certificate_verification`: moved to `client.skip_certificate_verification`.
+- `skip_certificate_verification`: moved to `client.verify_ssl`.
 - `aggregate_topic`: moved to `aggregate_report_topic`.
 - `forensic_topic`: moved to `forensic_report_topic`.
 

src/parsedmarc/sink/kafka.py

@@ -33,12 +33,13 @@ def setup(self) -> None:
         self._state = AppState.SETTING_UP
 
         try:
-            if self.config.client.skip_certificate_verification:
+            if self.config.client.verify_ssl:
+                # Use default context
+                ssl_context = None
+            else:
                 ssl_context = ssl.create_default_context()
                 ssl_context.check_hostname = False
                 ssl_context.verify_mode = ssl.CERT_NONE
-            else:
-                ssl_context = None
 
             self.client = kafkaclient.KafkaClient(
                 kafka_hosts=self.config.client.hosts,
@@ -77,6 +78,6 @@ class KafkaConfig(BaseConfig):
 class KafkaClient(BaseModel):
     hosts: List[str]
     ssl: bool = True
-    skip_certificate_verification: bool = False
+    verify_ssl: bool = True
     username: str | None = None
     password: str | None = None