Support --insecure-skip-tls-verify

[pbatey]

My K8S instance has a self-signed certificate and my cluster config requires --insecure-skip-tls-verify.

I think it's a matter of adding insecure_skip_tls_verify to the source configuration in assets/common.sh:

insecure_skip_tls_verify=$(jq -r '.source.insecure_skip_tls_verify // "false"' < $payload)
if [ "$insecure_skip_tls_verify" = true ]; then
  insecure_skip_tls_verify="--insecure-skip-tls-verify"
else
  insecure_skip_tls_verify=""
fi

...

kubectl config set-cluster default --server=$cluster_url --certificate-authority=$ca_path $insecure-skip-tls-verify

Will fork and make a pull request if it works.