For golang/go#49219

Change-Id: Ia0ede89fcf365c3feef9d34ac5a6b379749c015e
Reviewed-on: https://go-review.googlesource.com/c/debug/+/359595
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

- Get rid of URL option and use default slack API url.
- Add Token and Channels options
- rename post method to postBody
- move token from query params to header
- render channels param for files.upload from options
- add .idea to gitignore
- upgrade golang.org/x/sys version due to build fail golang/go#49219

Needed to bump x/sys dependency due to golang/go#49219
to ensure Go 1.18 compatibility on darwin.

This commit revendors our AzureStack fork to bring in:
openshift/terraform-provider-azurestack#5

which updated x/sys with the following commands:

go get -u golang.org/x/sys
go mod tidy -compat=1.17 && go mod vendor

This picks up a new 2022 version of golang.org/x/sys which is caused by
golang/go#49219 and is needed to fix building
using Go 1.18 on aarch64-darwin.

Older versions of the transitive dependency golang.org/x/sys cannot be
built on newer versions of Go for certain platforms.

golang/go#49219

## Problem
 
Build was failing on darwin/arm64. See
[here](golang/go#49219).

## Solution

We update the dependency on x/sys.

```
> go get -u golang.org/x/sys
go: downloading golang.org/x/sys v0.0.0-20221010170243-090e33056c14
go: upgraded golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f => v0.0.0-20221010170243-090e33056c14
> go mod tidy
```

* See: https://pkg.go.dev/golang.org/x/sys#section-readme
* golang/go#49219

There is a blocking go bug on darwin, golang/go#49219, that was hit
during NixOS/nixpkgs#200068. While we are updating things it seems
reasonable to bump everything.

Upgraded golang.org/x/sys from v0.2.0 to account for golang/go#49219.

Signed-off-by: Sienna Lloyd <sienna@linux.com>

This picks up a new 2022 version of golang.org/x/sys and is needed to fix building
using Go 1.18 on aarch64-darwin which is caused by
golang/go#49219.

…nc to fix building error

bump the two packages version to fix building error in go 1.18 (see:
https://stackoverflow.com/a/71508032/10068476 and golang/go#49219)

…nc to fix building error

bump the two packages version to fix building error in go 1.18 on darwin (see:
https://stackoverflow.com/a/71508032/10068476 and golang/go#49219)

Needed to bump x/sys dependency due to golang/go#49219
to ensure Go 1.18 compatibility on darwin.

This commit revendors our AzureStack fork to bring in:
openshift/terraform-provider-azurestack#5

which updated x/sys with the following commands:

go get -u golang.org/x/sys
go mod tidy -compat=1.17 && go mod vendor

Needed to bump x/sys dependency due to golang/go#49219
to ensure Go 1.18 compatibility on darwin.

This commit revendors our AzureStack fork to bring in:
openshift/terraform-provider-azurestack#5

which updated x/sys with the following commands:

go get -u golang.org/x/sys
go mod tidy -compat=1.17 && go mod vendor