CA-361078: Parse OVFs without a `Limit` element in the vCPUs section
CA-361078: Parse OVFs without a `Limit` element in the vCPUs section

VMWare OVFs don't export the value

Signed-off-by: Danilo Del Busso <766dc0f994b57f2d2e98930ecfa5ee8fb1091a62@citrix.com>

kc284/xenadmin,xenserver/xenadmin,xenserver/xenadmin,kc284/xenadmin,kc284/xenadmin,xenserver/xenadmin,kc284/xenadmin,kc284/xenadmin