Fix interactive paraview sessions on cross compiled crays.

If we run into systems again that lack sockets, we can revisit
this check and do it well.

Change-Id: Ifb1efe7f054cf7b677bf2a5095785919119874d5
Merge topic 'fix-cray-interactive-paraview' into master

7d2f9e62 Fix interactive paraview sessions on cross compiled crays.