When git repo is present, add VSCode task to push to GitHub

[pieterclaerhout]

Should add the following task:

{
    "label": "kubernetesmetrics | push to github",
    "command": "git push --set-upstream origin master",
    "type": "shell",
    "group": "build",
    "problemMatcher": [
        "$go"
    ]
}

[pieterclaerhout]

We should also try run this from a basic container based on scratch by copying the kubeconfig file…