update gitignore

Author: zac-nixon

.gitignore

@@ -26,3 +26,6 @@ site
 *.bak
 scripts/aws_sdk_model_override/*
 /gomock_reflect*
+config/crd/bases/gateway.k8s.aws_listenerruleconfigurations.yaml
+config/crd/bases/gateway.k8s.aws_loadbalancerconfigurations.yaml
+config/crd/bases/gateway.k8s.aws_targetgroupconfigurations.yaml