vmwizard: added the check and fields needed for min/max ram.

refs #12231
virtualmachine form: added validation

refs #12231
virtualmachine form: done() handles ganeti26

refs #12231
temlate to instance: beparams handles ganeti26

refs #12231
VirtualMachine model: Handles min/max mem

refs #12231
migration: added for the VM change. Works backwords as well.

refs #12231
models: more max/minmem changes

refs #12231
template to instance: forgot imports, removed ram reference

refs #12231
models: fixed up parsing persistant info for VMs

refs #12231