Auto merge of #3117 - jtgeibel:tokio-1.0, r=Turbo87

Bump to `tokio 1.0` and `hyper 0.14`

To avoid pulling in 2 versions of `tokio` at once:

* [x] Await `hyper-tls 0.5`
* [x] Await `reqwest 0.11`
* [x] Await an `oauth2` release depending on `reqwest 0.11` - ramosbugs/oauth2-rs#118
* [x] Await a `sentry` release depending on `reqwest 0.11` - getsentry/sentry-rust#304

r? `@ghost`

Author: bors