[RndTbl] LibreNMS installation _now_ working as it should

[Trevor Cordes]

On 2021-05-12 Gilbert E. Detillieux wrote:
> 2. When deviating from exact instructions (because I think I know 
> better), be careful of subtle side effects.  (Using "cp -p" is
> usually preferable to just "cp", but not always!)

I reflexively use cp -a for *everything* now.  I might as well make it
an alias...  -a is -p on steroids.