Add a fast_timeout for the `ServerService.ServerInfo` endpoint

changelogs/unreleased/gitaly-serverservice-info-timeout.yml

+---
+title: Use appropriate timeout on Gitaly server info checks, avoid error on timeout
+merge_request: 20552
+author:
+type: fixed

lib/gitaly/server.rb

@@ -50,7 +50,7 @@ module Gitaly
       @info ||=
         begin
           Gitlab::GitalyClient::ServerService.new(@storage).info
-        rescue GRPC::Unavailable, GRPC::GRPC::DeadlineExceeded
+        rescue GRPC::Unavailable, GRPC::DeadlineExceeded
           # This will show the server as being out of date
           Gitaly::ServerInfoResponse.new(git_version: '', server_version: '', storage_statuses: [])
         end

lib/gitlab/gitaly_client/server_service.rb

@@ -9,7 +9,7 @@ module Gitlab
       end
 
       def info
-        GitalyClient.call(@storage, :server_service, :server_info, Gitaly::ServerInfoRequest.new)
+        GitalyClient.call(@storage, :server_service, :server_info, Gitaly::ServerInfoRequest.new, timeout: GitalyClient.fast_timeout)
       end
     end
   end