[Users] Signing OS templates for trust issues

[Suno Ano]

Hi Scott and others,

I see our talk in #openvz yesterday was fruitful -- you have started
signing your OS templates in [0] and I would like to thank you for that
and all your other efforts.

I run a quick test http://pastebin.com/f3c59094f

All went fine as can be seen -- thank you Scott! I as many others need
that insurance/trust of getting OS templates where I can be sure no
malicious actions took place on the way from you creating and uploading
the stuff somewhere until it is downloaded and installed by somebody ...

[0] http://download.openvz.org/template/precreated/contrib/