Nomad base64Decode

# the "-" are important as the prevent go for placing LF, which will mess up the binary files
template {
        destination = "local/conf/ssl/keystore_decoded.jks"
        change_mode = "noop"
        data =<<EOF
{{ $mtls_path := env "NOMAD_META_mtls_path" -}}
{{ with secret (printf "%s" $mtls_path) }}{{.Data.keystore | base64Decode }}{{ end -}}
EOF
}