xenconfig: set HVM pae/apic/acpi/ default to 1
xenconfig: set HVM pae/apic/acpi/ default to 1

According to xm.config manual, HVM pae|apic|acpi feature default
is 1 (enabled). But in conversion from xm config to libvirt xml,
if xm config doesn't contain pae|apic|acpi, it sets default value
to 0, this causes some problems in HVM guest.

Update parser codes to set HVM pae|apic|acpi default value to 1
to match xm config convension.

Signed-off-by: Chunyan Liu <699809cfcad49bea8cea68d656dfc4a832feaf7a@suse.com>

taget/libvirt,rlaager/libvirt,andreabolognani/libvirt,elmarco/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,eskultety/libvirt,jfehlig/libvirt,agx/libvirt,VenkatDatta/libvirt,zippy2/libvirt,libvirt/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,libvirt/libvirt,zippy2/libvirt,crobinso/libvirt,jardasgit/libvirt,agx/libvirt,agx/libvirt,andreabolognani/libvirt,taget/libvirt,shugaoye/libvirt,olafhering/libvirt,rlaager/libvirt,nertpinx/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,eskultety/libvirt,andreabolognani/libvirt,elmarco/libvirt,crobinso/libvirt,taget/libvirt,eskultety/libvirt,jardasgit/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,crobinso/libvirt,andreabolognani/libvirt,jfehlig/libvirt,datto/libvirt,shugaoye/libvirt,olafhering/libvirt,nertpinx/libvirt,shugaoye/libvirt,andreabolognani/libvirt,eskultety/libvirt,taget/libvirt,rlaager/libvirt,datto/libvirt,zippy2/libvirt,VenkatDatta/libvirt,agx/libvirt,jardasgit/libvirt,zippy2/libvirt,agx/libvirt,nertpinx/libvirt,crobinso/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,taget/libvirt,jardasgit/libvirt,jardasgit/libvirt,rlaager/libvirt,libvirt/libvirt,eskultety/libvirt,fabianfreyer/libvirt,olafhering/libvirt,olafhering/libvirt,VenkatDatta/libvirt,elmarco/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,elmarco/libvirt,datto/libvirt,datto/libvirt,elmarco/libvirt,datto/libvirt,rlaager/libvirt,libvirt/libvirt