traefik version command contains incorrect information when building from master branch

[kashook]

When building traefik from the master branch recently, I noticed that when I execute the traefik version command, the data displayed are the default hard coded values:

Version:      dev
Codename:     cheddar
Go version:   go1.6.3
Built:        I don't remember exactly
OS/Arch:      linux/amd64

I believe the problem is related to this changeset moving the version-related variables out of the main package.

To fix, I think this line needs changed so that the variables that are being replaced contain the fully qualified package name, like this:

CGO_ENABLED=0 GOGC=off go build $FLAGS -ldflags "-s -w -X github.com/containous/traefik/version.Version=$VERSION -X github.com/containous/traefik/version.Codename=$CODENAME -X github.com/containous/traefik/version.BuildDate=$DATE" -a -installsuffix nocgo -o dist/traefik .

When I make that change locally, the version command seems to print the right stuff:

Version:      7abe68fac10ab42bbc59dddef622d730abff950a
Codename:     cheddar
Go version:   go1.6.3
Built:        2016-07-29_07:17:47PM
OS/Arch:      linux/amd64

I don't know Go all that well. I'd be willing to submit a pull request but I'm hoping someone from this project will comment whether this seems like the right fix. I also wouldn't mind if someone just fixed it. :)

[errm]

Looks like the correct fix to me, feel free to open a PR if you wish @keiths-osc