[WIP] Adding flavor as a has one on VM

I basically want to search Vms like
`vms = Flavor.joins(:vms).where(:flavors => {:name => 't2.micro'})`

so that in the api we can filter by flavor name

app/models/vm_or_template.rb

@@ -60,7 +60,8 @@ class VmOrTemplate < ApplicationRecord
 
   has_one                   :miq_server, :foreign_key => :vm_id, :inverse_of => :vm
 
-  has_one                   :operating_system, :dependent => :destroy
+  has_one                   :flavor, :foreign_key => :ems_id
+
   has_one                   :hardware, :dependent => :destroy
   has_many                  :disks, :through => :hardware
   belongs_to                :host