Move Author name and email to cli author

AuthorEmail and AuthorName arent't being displayed which resulted into
dead code. Use the official author fields available in `urfave/cli`.

main.go

@@ -14,6 +14,7 @@ func main() {
 	app.Usage = "Set of commands to debug TLS certificates for GitLab Runner."
 	app.Description = "Set of commands to debug TLS certificates for GitLab Runner."
 	app.Version = Version().ShortLine()
+	app.Author = "GitLab Inc. <support@gitlab.com>"
 
 	cli.VersionPrinter = func(_ *cli.Context) {
 		fmt.Print(Version().Extended())

version.go

@@ -12,9 +12,6 @@ var (
 	REVISION = "HEAD"
 	BRANCH   = "HEAD"
 	BUILT    = "now"
-
-	AuthorName  = "GitLab Inc."
-	AuthorEmail = "support@gitlab.com"
 )
 
 type VersionInfo struct {