Description of problem:

In clean installation of is6, new VMs inherit console type by default from Blank template. But Blank template got VNC console type now, this is regression from previous versions...

* upgrade from is5 to is6:

# psql -U engine -c "select vm_name,default_display_type from vm_static where vm_name = 'Blank';"
Password for user engine: 
 vm_name | default_display_type 
---------+----------------------
 Blank   |                    1
(1 row)


* clean install:

engine=> select vm_name,default_display_type from vm_static where vm_name = 'Blank';
 vm_name | default_display_type 
---------+----------------------
 Blank   |                    0
(1 row)


Version-Release number of selected component (if applicable):
is6

How reproducible:
100%

Steps to Reproduce:
1. have clean is6, create new vm
2.
3.

Actual results:
VNC console by default

Expected results:
SPICE as usual

Additional info: