Move *_for_request methods into Cloud/Infra classes

Cloud and Infra requests use different default quota calculation logic.

app/models/manageiq/providers/cloud_manager/template.rb

@@ -155,6 +155,18 @@ def self.display_name(number = 1)
     n_('Image', 'Images', number)
   end
 
+  def memory_for_request(request, flavor_id = nil)
+    flavor_id ||= request.get_option(:instance_type)
+    flavor_obj = Flavor.find(flavor_id)
+    flavor_obj.try(:memory)
+  end
+
+  def number_of_cpus_for_request(request, flavor_id = nil)
+    flavor_id ||= request.get_option(:instance_type)
+    flavor_obj = Flavor.find(flavor_id)
+    flavor_obj.try(:cpus)
+  end
+
   private
 
   def raise_created_event

app/models/manageiq/providers/infra_manager/template.rb

@@ -5,6 +5,16 @@ def self.display_name(number = 1)
     n_('Template', 'Templates', number)
   end
 
+  def memory_for_request(request, _flavor_id = nil)
+    memory = request.get_option(:vm_memory).to_i
+    %w[amazon openstack google].include?(vendor) ? memory : memory.megabytes
+  end
+
+  def number_of_cpus_for_request(request, _flavor_id = nil)
+    num_cpus = request.get_option(:number_of_sockets).to_i * request.get_option(:cores_per_socket).to_i
+    num_cpus.zero? ? request.get_option(:number_of_cpus).to_i : num_cpus
+  end
+
   private
 
   def raise_created_event

app/models/miq_template.rb

@@ -96,27 +96,11 @@ def display_deprecated
   end
 
   def memory_for_request(request, flavor_id = nil)
-    flavor_id ||= request.get_option(:instance_type)
-    flavor_obj = Flavor.find(flavor_id)
-
-    memory = flavor_obj.try(:memory) if request.source.try(:cloud)
-    return memory if memory.present?
-
-    request = prov.kind_of?(MiqRequest) ? prov : prov.miq_request
-    memory = request.get_option(:vm_memory).to_i
-    %w(amazon openstack google).include?(vendor) ? memory : memory.megabytes
+    raise NotImplementedError, _("must be implemented in a subclass")
   end
 
   def number_of_cpus_for_request(request, flavor_id = nil)
-    flavor_id ||= request.get_option(:instance_type)
-    flavor_obj = Flavor.find(flavor_id)
-
-    num_cpus = flavor_obj.try(:cpus) if request.source.try(:cloud)
-    return num_cpus if num_cpus.present?
-
-    request = prov.kind_of?(MiqRequest) ? prov : prov.miq_request
-    num_cpus = request.get_option(:number_of_sockets).to_i * request.get_option(:cores_per_socket).to_i
-    num_cpus.zero? ? request.get_option(:number_of_cpus).to_i : num_cpus
+    raise NotImplementedError, _("must be implemented in a subclass")
   end
 
   private_class_method def self.refresh_association