Update SCOM Linux SHA1 certificates to SHA256

[lb92]

We’ve decided to move from SHA1 to SHA256 certs for our SCOM monitored Linux agents - anyone know a way of doing this quickly?

[scomninja]

I nabbed this script of TechNet, did the trick for me! https://gallery.technet.microsoft.com/Script-to-update-SHA1-8a30c5ef/view/Discussions#content