Add Quota calculations for reconfigure resize disks

Added test for disk_resize

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1533263
Made 2 changes as requested

Added log_and_raise for disk_names that are not found.
Added a test case where the disk_name doesn't exist

Modified error text to be generic
Removed embedded method
Included the disk name when we raise the exception

content/automate/ManageIQ/System/CommonMethods/QuotaMethods.class/__methods__/requested.rb

@@ -148,7 +148,7 @@ def vmdb_object(model, id)
 
 def get_disk_size(disk_name)
   mydisk = $evm.vmdb('disk').find_by(:filename => disk_name)
-  raise "ERROR - Disk_name not found for Reconfiguration" if mydisk.nil?
+  raise "ERROR - #{disk_name} not found for Reconfiguration" if mydisk.nil?
   mydisk.size.to_i
 end
 
@@ -171,6 +171,13 @@ def requested_storage(args_hash)
         args_hash[:prov_value] -= current_size
       end
     end
+    args_hash[:resource].options[:disk_resize]&.each do |disk|
+      # Disk_resize only supports increasing the size.
+      $evm.log(:info, "Reconfigure Disk Resize:  #{disk.inspect}")
+      current_size = get_disk_size(disk['disk_name'])
+      $evm.log(:info, "Current disk size: #{current_size.to_s(:human_size)}")
+      args_hash[:prov_value] += disk['disk_size_in_mb'].to_i.megabytes - current_size
+    end
   else
     vm_size = args_hash[:resource].vm_template.provisioned_storage
     args_hash[:prov_value] = vm_size

spec/automation/unit/method_validation/requested_spec.rb

@@ -241,6 +241,22 @@ def check_results(requested_hash, storage, cpu, vms, memory)
       check_results(ws.root['quota_requested'], 10.megabytes, 2, 1, 4096.megabytes)
     end
 
+    it "resize 10 to 20 megabyte disk, difference is 10" do
+      # Disk_resize only supports increasing the size.
+      setup_model("vmware_reconfigure")
+      @reconfigure_request.update_attributes(:options => {:src_ids => [@vm_vmware.id], :request_type => :vm_reconfigure,\
+      :disk_resize => [{"disk_name" => disk.filename, "disk_size_in_mb" => 20}]})
+      ws = run_automate_method(reconfigure_attrs)
+      check_results(ws.root['quota_requested'], 10.megabytes, 0, 1, 0)
+    end
+
+    it "resize a disk thats not found" do
+      setup_model("vmware_reconfigure")
+      @reconfigure_request.update_attributes(:options => {:src_ids => [@vm_vmware.id], :request_type => :vm_reconfigure,\
+      :disk_resize => [{"disk_name" => "not found", "disk_size_in_mb" => 20}]})
+      expect { run_automate_method(reconfigure_attrs) }.to raise_error(MiqAeException::UnknownMethodRc)
+    end
+
     it "removes a disk " do
       setup_model("vmware_reconfigure")
       @reconfigure_request.update_attributes(:options => {:src_ids => [@vm_vmware.id], :request_type => :vm_reconfigure,\