Detected new managed modules references

modules/sync/envoyproxy/envoy/cas/c8c66d1ff533c2b66cacc300d07c03d7e3d2fba6f98204a7b19739bb3411d64de521b48fa071bb30b49b74105a0d848e14bd8c8cc6117b8af917fb4c7ff8155d

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+syntax = "proto3";
+
+package envoy.config.trace.v3;
+
+import "google/protobuf/wrappers.proto";
+
+import "envoy/annotations/deprecation.proto";
+import "udpa/annotations/migrate.proto";
+import "udpa/annotations/status.proto";
+import "udpa/annotations/versioning.proto";
+import "validate/validate.proto";
+
+option java_package = "io.envoyproxy.envoy.config.trace.v3";
+option java_outer_classname = "ZipkinProto";
+option java_multiple_files = true;
+option go_package = "github.com/envoyproxy/go-control-plane/envoy/config/trace/v3;tracev3";
+option (udpa.annotations.file_migrate).move_to_package = "envoy.extensions.tracers.zipkin.v4alpha";
+option (udpa.annotations.file_status).package_version_status = ACTIVE;
+
+// [#protodoc-title: Zipkin tracer]
+
+// Configuration for the Zipkin tracer.
+// [#extension: envoy.tracers.zipkin]
+// [#next-free-field: 8]
+message ZipkinConfig {
+  option (udpa.annotations.versioning).previous_message_type = "envoy.config.trace.v2.ZipkinConfig";
+
+  // Available Zipkin collector endpoint versions.
+  enum CollectorEndpointVersion {
+    // Zipkin API v1, JSON over HTTP.
+    // [#comment: The default implementation of Zipkin client before this field is added was only v1
+    // and the way user configure this was by not explicitly specifying the version. Consequently,
+    // before this is added, the corresponding Zipkin collector expected to receive v1 payload.
+    // Hence the motivation of adding HTTP_JSON_V1 as the default is to avoid a breaking change when
+    // user upgrading Envoy with this change. Furthermore, we also immediately deprecate this field,
+    // since in Zipkin realm this v1 version is considered to be not preferable anymore.]
+    DEPRECATED_AND_UNAVAILABLE_DO_NOT_USE = 0
+        [deprecated = true, (envoy.annotations.disallowed_by_default_enum) = true];
+
+    // Zipkin API v2, JSON over HTTP.
+    HTTP_JSON = 1;
+
+    // Zipkin API v2, protobuf over HTTP.
+    HTTP_PROTO = 2;
+
+    // [#not-implemented-hide:]
+    GRPC = 3;
+  }
+
+  // The cluster manager cluster that hosts the Zipkin collectors.
+  string collector_cluster = 1 [(validate.rules).string = {min_len: 1}];
+
+  // The API endpoint of the Zipkin service where the spans will be sent. When
+  // using a standard Zipkin installation.
+  string collector_endpoint = 2 [(validate.rules).string = {min_len: 1}];
+
+  // Determines whether a 128bit trace id will be used when creating a new
+  // trace instance. The default value is false, which will result in a 64 bit trace id being used.
+  bool trace_id_128bit = 3;
+
+  // Determines whether client and server spans will share the same span context.
+  // The default value is true.
+  google.protobuf.BoolValue shared_span_context = 4;
+
+  // Determines the selected collector endpoint version.
+  CollectorEndpointVersion collector_endpoint_version = 5;
+
+  // Optional hostname to use when sending spans to the collector_cluster. Useful for collectors
+  // that require a specific hostname. Defaults to :ref:`collector_cluster <envoy_v3_api_field_config.trace.v3.ZipkinConfig.collector_cluster>` above.
+  string collector_hostname = 6;
+
+  // If this is set to true, then Envoy will be treated as an independent hop in trace chain. A complete span pair will be created for a single
+  // request. Server span will be created for the downstream request and client span will be created for the related upstream request.
+  // This should be set to true in the following cases:
+  //
+  // * The Envoy Proxy is used as gateway or ingress.
+  // * The Envoy Proxy is used as sidecar but inbound traffic capturing or outbound traffic capturing is disabled.
+  // * Any case that the :ref:`start_child_span of router <envoy_v3_api_field_extensions.filters.http.router.v3.Router.start_child_span>` is set to true.
+  //
+  // .. attention::
+  //
+  //   If this is set to true, then the
+  //   :ref:`start_child_span of router <envoy_v3_api_field_extensions.filters.http.router.v3.Router.start_child_span>`
+  //   SHOULD be set to true also to ensure the correctness of trace chain.
+  //
+  //   Both this field and ``start_child_span`` are deprecated by the
+  //   :ref:`spawn_upstream_span <envoy_v3_api_field_extensions.filters.network.http_connection_manager.v3.HttpConnectionManager.Tracing.spawn_upstream_span>`.
+  //   Please use that ``spawn_upstream_span`` field to control the span creation.
+  bool split_spans_for_request = 7
+      [deprecated = true, (envoy.annotations.deprecated_at_minor_version) = "3.0"];
+}