feature(retrofit): Add exception handler to service factory

This commit adds the SpinnakerRetrofitErrorHandler to service factories
which allows for clients that rely on service factories to properly have
RetrofitErrors be converted to some Spinnaker*Exception.

Signed-off-by: benjamin-j-powell <bjp@apple.com>

kork-retrofit/src/main/java/com/netflix/spinnaker/kork/retrofit/RetrofitServiceFactory.java

@@ -25,6 +25,7 @@
 import com.netflix.spinnaker.config.okhttp3.OkHttpClientProvider;
 import com.netflix.spinnaker.kork.annotations.NonnullByDefault;
 import com.netflix.spinnaker.kork.client.ServiceClientFactory;
+import com.netflix.spinnaker.kork.retrofit.exceptions.SpinnakerRetrofitErrorHandler;
 import com.netflix.spinnaker.retrofit.Slf4jRetrofitLogger;
 import retrofit.Endpoint;
 import retrofit.RequestInterceptor;
@@ -54,6 +55,7 @@ public <T> T create(Class<T> type, ServiceEndpoint serviceEndpoint, ObjectMapper
         .setRequestInterceptor(spinnakerRequestInterceptor)
         .setConverter(new JacksonConverter(objectMapper))
         .setEndpoint(endpoint)
+        .setErrorHandler(SpinnakerRetrofitErrorHandler.getInstance())
         .setClient(new Ok3Client(clientProvider.getClient(serviceEndpoint)))
         .setLogLevel(retrofitLogLevel)
         .setLog(new Slf4jRetrofitLogger(type))