add SSL support to VTKWeb server

New command-line arguments allow us to serve VTKWeb content
over secure websockets.

Change-Id: Ieb5bb9c5a4387bd9ec6c738546f3622480b7b2f1
Add configuration pass to Catalyst PVW workflow

Change-Id: Ib9619597387940a1286edbe0fdd15ec61931147e
Merge topic 'catalyst-web-better-workflow' into master

30e74c14 Add configuration pass to Catalyst PVW workflow
Merge topic 'vtkweb_ssl' into master

14071140 add SSL support to VTKWeb server