Vector: Upgrade `hyper` for `futures` 0.3

[MOZGIII]

As part of the https://github.com/timberio/vector/issues/1142, upgrade hyper to v0.13+.

---

Here's a list of dependencies that are themselves blocked on tokio 0.1:

• goauth - https://github.com/durch/rust-goauth/issues/8
• shiplift - https://github.com/softprops/shiplift/issues/185
• ./vector/lib/tracing-metrics - we'll take care of it

Crates that are ready for the upgrade:

• hyper
• hyper-tls
• hyper-openssl
• reqwest
• rusoto_*
• kube
• hyperlocal
• warp

Overall, not that bad.

[MOZGIII]

$ cargo tree -i -p hyper:0.12.35
hyper v0.12.35
├── hyper-openssl v0.7.1
│   └── shiplift v0.6.0
│       └── vector v0.9.0 (.../vector)
├── hyper-tls v0.3.2
│   ├── reqwest v0.9.24
│   │   ├── goauth v0.6.1
│   │   │   └── vector v0.9.0 (.../vector) (*)
│   │   └── kube v0.16.1
│   │       [dev-dependencies]
│   │       └── vector v0.9.0 (.../vector) (*)
│   └── rusoto_core v0.41.0
│       ├── rusoto_cloudwatch v0.41.0
│       │   └── vector v0.9.0 (.../vector) (*)
│       ├── rusoto_firehose v0.41.0
│       │   └── vector v0.9.0 (.../vector) (*)
│       ├── rusoto_kinesis v0.41.0
│       │   └── vector v0.9.0 (.../vector) (*)
│       ├── rusoto_logs v0.41.0
│       │   └── vector v0.9.0 (.../vector) (*)
│       ├── rusoto_s3 v0.41.0
│       │   └── vector v0.9.0 (.../vector) (*)
│       ├── rusoto_sts v0.41.0
│       │   └── vector v0.9.0 (.../vector) (*)
│       └── vector v0.9.0 (.../vector) (*)
├── hyperlocal v0.6.0
│   └── shiplift v0.6.0 (*)
├── reqwest v0.9.24 (*)
├── rusoto_core v0.41.0 (*)
├── rusoto_credential v0.41.1
│   ├── rusoto_core v0.41.0 (*)
│   └── vector v0.9.0 (.../vector) (*)
├── shiplift v0.6.0 (*)
└── warp v0.1.21 (git+https://github.com/timberio/warp?branch=0.1.x#017965c627047bf0e53062940e7def127cb21649)
    └── vector v0.9.0 (.../vector) (*)
[dev-dependencies]
└── tracing-metrics v0.1.0 (.../vector/lib/tracing-metrics)
    └── vector v0.9.0 (.../vector) (*)

[LucioFranco]

The sink side of this has been done and you can find the implementation in http2. Source and Prometheus sinks that use wrap will still need an upgrade.

[binarylogic]

@ktff this is part of our Tech-Debt Payment #1: Move to Tokio 0.2/Futures 0.3 Project. I'm assigning _just_ this issue to you. I've assigned #2118 and #1142 to @fanatid. I'm assuming this work won't conflict. If it does, let me know and we can try to reassign issues in a way that doesn't.

[ktff]

@fanatid can you prioritize updating src/sinks/aws_cloudwatch_logs/mod.rs to use
src/sinks/util/rusoto2.rs instead of src/sinks/util/rusoto.rs. With that and #2808 being merged, we'll be able to finish the upgrade of hyper and hyper-openssl.

[fanatid]

Sure, it was done in #2777 but need move to new PR, should be ready soon.