[SHEEPDOG]: Correct install

Hi,

there is no recommended way, because sheepdog has problems when it come to upgrade.
Both way work.
The setup is the same.
You have no GUI support to build the cluster or monitor it.
We have only the storage plugin what we need to use sheepdog.
 
Thank you. I'll install from source then. At least I'll be using an up-to-date version.