MAGETWO-34253: CLONE - Postal code is still mandatory for Non-US addresses that don't use it

 - Added component post-code-fix that contain logic with uniting {country_id} and {postcode}

Author: guz-anton

app/code/Magento/Customer/etc/data_source/customer_address.xml

@@ -48,11 +48,13 @@
                 </constraints>
             </field>
             <field name="region" source="eav" formElement="input" visible="false"/>
-            <field name="postcode" source="eav"  dataType="post_code_fix">
+
+            <field name="postcode" source="eav" formElement="post_code_fix" >
                 <constraints>
                     <validate name="required-entry"/>
                 </constraints>
             </field>
+
             <field name="telephone" source="eav" label="Phone Number">
                 <constraints>
                     <validate name="required-entry"/>

app/code/Magento/Ui/view/base/layout/ui_components.xml

@@ -239,6 +239,7 @@
         <arguments>
             <argument name="js_config" xsi:type="array">
                 <item name="component" xsi:type="string">Magento_Ui/js/form/element/post-code-fix</item>
+                <item name="dependentFiled" xsi:type="string">country_id</item>
             </argument>
         </arguments>
     </block>

app/code/Magento/Ui/view/base/web/js/form/components/posCodeFix.js

@@ -3,8 +3,9 @@
  * See COPYING.txt for license details.
  */
 define([
+    'Magento_Ui/js/lib/registry/registry',
     './abstract'
-], function (Abstract) {
+], function (registry, Abstract) {
     'use strict';
 
     return Abstract.extend({
@@ -13,25 +14,28 @@ define([
          *
          * @return {Boolean}
          */
-        getInititalValue: function(){
-            debugger;
-            return this._super();
+        initListeners: function(){
+            this._super();
+            this.provider.data.on('update:'+this.parentScope+'.country_id', this.update.bind(this));
+            return this;
         },
 
-        /**
-         * Calls 'store' method of parent, if value is defined and instance's
-         *     'unique' property set to true, calls 'setUnique' method
-         *
-         * @return {Object} - reference to instance
-         */
-        store: function() {
-            this._super();
+        update: function(value){
+            var parentScope  = this.getPart(this.getPart(this.name, -2), -2),
+                component = registry.get(parentScope + '.country_id.0'),
+                element;
 
-            if (this.hasUnique) {
-                this.setUnique();
-            }
+            component
+                .options()
+                .some(function (el, idx) {
+                    element = el;
+                    return el.value === value;
+                });
 
-            return this;
+            if(!element.is_region_required) {
+                this.error(false);
+            }
+            this.required(!!element.is_region_required);
         }
     });
 });