Install sanlock-python on jenkins slaves

[Adam Litke]

Hi,

I would like to remove an old hack in the test code that was put in
place at a time when sanlock was not widely available on everyone's
development machines.  Since it is now installable on all supported
platforms I would like to make it a BuildRequires and remove the hack.
See the patch [1] here.

In order for this patch to pass CI, I need those machines updated with
the new BuildRequires: sanlock-python.  Could you please install it?
Thanks!

Note that we do NOT need sanlock (the daemon).  We just need the
python module in order to satisfy imports.

Thanks!

-- 
Adam Litke