ratelimit: remove deprecated rate limit config from bootstrap (#6300)

Signed-off-by: Rama Chavali <rama.rao@salesforce.com>

Mirrored from https://github.com/envoyproxy/envoy @ 75d360834537bef27cdd8cc43e1f8873b9790b70

envoy/config/bootstrap/v2/bootstrap.proto

@@ -108,10 +108,7 @@ message Bootstrap {
   // tracing will be performed.
   envoy.config.trace.v2.Tracing tracing = 9;
 
-  // Configuration for an external rate limit service provider. If not
-  // specified, any calls to the rate limit service will immediately return
-  // success.
-  envoy.config.ratelimit.v2.RateLimitServiceConfig rate_limit_service = 10 [deprecated = true];
+  reserved 10;
 
   // Configuration for the runtime configuration provider. If not specified, a
   // “null” provider will be used which will result in all defaults being used.

envoy/config/filter/http/rate_limit/v2/rate_limit.proto

@@ -55,7 +55,6 @@ message RateLimit {
   // Configuration for an external rate limit service provider. If not
   // specified, any calls to the rate limit service will immediately return
   // success.
-  // [#comment:TODO(ramaraochavali): Make this required as part of cleanup of deprecated ratelimit
-  // service config in bootstrap.]
-  envoy.config.ratelimit.v2.RateLimitServiceConfig rate_limit_service = 7;
+  envoy.config.ratelimit.v2.RateLimitServiceConfig rate_limit_service = 7
+      [(validate.rules).message.required = true];
 }

envoy/config/filter/network/rate_limit/v2/rate_limit.proto

@@ -42,7 +42,6 @@ message RateLimit {
   // Configuration for an external rate limit service provider. If not
   // specified, any calls to the rate limit service will immediately return
   // success.
-  // [#comment:TODO(ramaraochavali): Make this required as part of cleanup of deprecated ratelimit
-  // service config in bootstrap.]
-  envoy.config.ratelimit.v2.RateLimitServiceConfig rate_limit_service = 6;
+  envoy.config.ratelimit.v2.RateLimitServiceConfig rate_limit_service = 6
+      [(validate.rules).message.required = true];
 }

envoy/config/filter/thrift/rate_limit/v2alpha1/rate_limit.proto

@@ -46,7 +46,6 @@ message RateLimit {
   // Configuration for an external rate limit service provider. If not
   // specified, any calls to the rate limit service will immediately return
   // success.
-  // [#comment:TODO(ramaraochavali): Make this required as part of cleanup of deprecated ratelimit
-  // service config in bootstrap.]
-  envoy.config.ratelimit.v2.RateLimitServiceConfig rate_limit_service = 5;
+  envoy.config.ratelimit.v2.RateLimitServiceConfig rate_limit_service = 5
+      [(validate.rules).message.required = true];
 }