ncm-opennebula: add libvirt hw machine type option

[alvarosimon]

Required to add q35 hw machine types

#1776 must be merged first

Resolves: #1821

[wpoely86]

Can you rebase?

[alvarosimon]

Can you rebase?

@wpoely86 done!

[wpoely86]

Shouldn't the output of a tests also be changed?

[alvarosimon]

@wpoely86 indeed, I have included the missing regex

[wpoely86]

But how could the tests pass before this change?

The remark for the change in test/resources/vm.pan ?

[wpoely86]

the regex turned out to be not very strict. Fixed also.

ah ok why it was working before (actually I also forgot to include the check) is because the test itself the regex is not quite strict as you can see it was:

^MEMORY\s?=\s*"\d+"\s*$
^OS\s?=\s?\[$
^\s*BOOT\s?=\s*""\s*$
^RAW\s?=\s?\[$

so this also work if I include something after OS = [ so the regex was working indeed before, now I have included the regex explicitly so if you modify MACHINE it will fail
so the previous check only was looking for BOOT after OS and indeed it was right.. even if I include MACHINE between... now its more explicit