ui: Hide cpuspeed for custom constrained offering (#3996)

For customer constrained offering, the cpu speed is fixed.
Therefore the 'CpuSpeed' field should be hidden for customer constrained offering when change vm offering on UI.
It is visible only for unconstrained offering.

This is regression issue of #3245

Author: ustcweizhou

ui/scripts/instances.js

@@ -2196,7 +2196,11 @@
                                                 return;
 
                                             if (selectedServiceofferingObj.iscustomized == true) {
-                                                $form.find('.form-item[rel=cpuSpeed]').css('display', 'inline-block');
+                                                if (selectedServiceofferingObj.cpuspeed) {
+                                                    $form.find('.form-item[rel=cpuSpeed]').hide();
+                                                } else {
+                                                    $form.find('.form-item[rel=cpuSpeed]').css('display', 'inline-block');
+                                                }
                                                 $form.find('.form-item[rel=cpuNumber]').css('display', 'inline-block');
                                                 $form.find('.form-item[rel=memory]').css('display', 'inline-block');
                                             } else {