Add labels to the containers from the function spec

[alexellis]

Add labels to the containers from the function spec

[alexellis]

It'd be anything that is in the struct received over HTTP

[alexellis]

@utsavanand2 I think your PR should be a little easier now that we have merged changes for #20, here's an example of the test command, right now the labels are ignored, after your PR, they should show up here. cc @carlosedp

> faas-cli store deploy figlet --label test=true
WARNING! Communication is not secure, please consider using HTTPS. Letsencrypt.org offers free SSL/TLS certificates.
Function figlet already exists, attempting rolling-update.

Deployed. 200 OK.
URL: http://127.0.0.1:8080/function/figlet

> faas-cli describe figlet
Name:                figlet
Status:              Ready
Replicas:            1
Available replicas:  1
Invocations:         0
Image:               
Function process:    
URL:                 http://127.0.0.1:8080/function/figlet
Async URL:           http://127.0.0.1:8080/async-function/figlet

[carlosedp]

@utsavanand2 I'd look here: https://godoc.org/github.com/containerd/containerd#WithContainerLabels

and here:

faas-containerd/handlers/deploy.go

Line 86 in 4aba016

container, err := client.NewContainer(

:)

[utsavanand2]

I'll take this up

[utsavanand2]

@alexellis Sir do we also want to put the labels from the types.FunctionDeployment by default in addition to the custom ones we apply from the cli flag?

[utsavanand2]

Thanks for the help @alexellis and @carlosedp !! 😄