Let sudo execute true instead of --validate
Let sudo execute true instead of --validate

Using `sudo --validate` will require a password although the calling
users is configured as a trusted sudoer. Consequently, a
`sudo --non-interactive --validate` will return an error. Using
`sudo --non-interactive true` works fine though, so this commit changes
the use of `--validate` to instead execute `true`.

Signed-off-by: Thomas Hallgren <5f50a84c1fa3bcff146405017f36aec1a10a9e38@datawire.io>

datawire/telepresence,datawire/telepresence,datawire/telepresence