influx cli support multiple profiles

[gitirabassi]

as of now you can configure the influx cli with either INFLUX_HOST and INFLUX_TOKEN or the token setup in ~/.influxdbv2/credentials and this is a good starting point.

But soon will rise the need to be handling multiple instances and endpoints or credentials for th e same instance for testing/debug purposes. I'd like to be able to have profiles just like the aws cli with the ~/.influxdbv2/credentials file looking something like

[default]
address = "http://localhost:9999"
token = "xxxxx"

[staging]
address = "https://example.com:9999"
token = "xxxx"

[frankfurt]
address = "https://eu-central-1-1.aws.influxcloud.net"
token = "xxxx"

and the usage can be along the lines of influx --profile=frankfurt bucket find or setup the INFLUX_PROFILE=frankfurt env variable

[imogenkinsman]

I love this idea, it's like kubectx/kubens. Would be great to see a UX like those too.

[russorat]

i agree this would be useful. that was the original reason we used a file.

[imogenkinsman]

Let's spike this out and present it at demo day to see if product likes the UX.

My preference is to borrow heavily from kubectx, as that's an experience that developers are familiar with: https://github.com/ahmetb/kubectx#kubectx1, but open to other ideas on this.