Add `api_go_proto_library` targets for HTTP connection manager protos. (#584)

These are required to generate xDS responses from a Go binary. If they
don't exist, implementations are required to vendor the data-plane-api
with this change applied.

Signed-off-by: John Millikin <jmillikin@stripe.com>

envoy/config/filter/accesslog/v2/BUILD

@@ -1,4 +1,4 @@
-load("//bazel:api_build_system.bzl", "api_proto_library")
+load("//bazel:api_build_system.bzl", "api_proto_library", "api_go_proto_library")
 
 licenses(["notice"])  # Apache 2
 
@@ -18,3 +18,14 @@ api_proto_library(
         "//envoy/type:percent",
     ],
 )
+
+api_go_proto_library(
+    name = "accesslog",
+    proto = ":accesslog",
+    deps = [
+        "//envoy/api/v2/core:address_go_proto",
+        "//envoy/api/v2/core:base_go_proto",
+        "//envoy/api/v2/core:grpc_service_go_proto",
+        "//envoy/type:percent_go_proto",
+    ],
+)

envoy/config/filter/network/http_connection_manager/v2/BUILD

@@ -1,4 +1,4 @@
-load("//bazel:api_build_system.bzl", "api_proto_library")
+load("//bazel:api_build_system.bzl", "api_proto_library", "api_go_proto_library")
 
 licenses(["notice"])  # Apache 2
 
@@ -14,3 +14,16 @@ api_proto_library(
         "//envoy/type:percent",
     ],
 )
+
+api_go_proto_library(
+    name = "http_connection_manager",
+    proto = ":http_connection_manager",
+    deps = [
+        "//envoy/api/v2:rds_go_grpc",
+        "//envoy/api/v2/core:base_go_proto",
+        "//envoy/api/v2/core:config_source_go_proto",
+        "//envoy/api/v2/core:protocol_go_proto",
+        "//envoy/config/filter/accesslog/v2:accesslog_go_proto",
+        "//envoy/type:percent_go_proto",
+    ],
+)