参考：https://blog.51cto.com/u_13746169/5876532
Nuget包：
Ocelot
Ocelot.Provider.Consul
Ocelot.Provider.Polly
Ocelot.Cache.CacheManager
程序包管理器控制台CLI
Install-Package Ocelot -Version 16.0.1
Install-Package Ocelot.Provider.Consul -Version 16.0.1
Install-Package Ocelot.Provider.Polly -Version 16.0.1
Install-Package Microsoft.VisualStudio.Web.CodeGeneration.Design -Version 16.0.1
Install-Package Microsoft.Extensions.Caching.Memory -Version 3.1.6
Install-Package Microsoft.Extensions.Caching.Abstractions -Version 3.1.6
Install-Package IdentityServer4.AccessTokenValidation -Version 3.0.1
Install-Package MMLib.SwaggerForOcelot -Version 2.5.1