MAGETWO-70062: Product price filter in admin shows incorrect product amount

  - Rename collection to avoid naming conflict with already imported collections in the same namespace

Author: igrybkov

app/code/Magento/Catalog/Ui/DataProvider/Product/Collection.php renamed to app/code/Magento/Catalog/Ui/DataProvider/Product/ProductCollection.php

@@ -10,7 +10,7 @@
  *
  * Used for product grid and customizes behavior of the default Product collection for grid needs.
  */
-class Collection extends \Magento\Catalog\Model\ResourceModel\Product\Collection
+class ProductCollection extends \Magento\Catalog\Model\ResourceModel\Product\Collection
 {
     /**
      * Disables using of price index for grid rendering

app/code/Magento/Catalog/etc/adminhtml/di.xml

@@ -77,9 +77,9 @@
     <type name="Magento\Catalog\Model\ResourceModel\Attribute">
         <plugin name="invalidate_pagecache_after_attribute_save" type="Magento\Catalog\Plugin\Model\ResourceModel\Attribute\Save" />
     </type>
-    <virtualType name="\Magento\Catalog\Ui\DataProvider\Product\CollectionFactory" type="\Magento\Catalog\Model\ResourceModel\Product\CollectionFactory">
+    <virtualType name="\Magento\Catalog\Ui\DataProvider\Product\ProductCollectionFactory" type="\Magento\Catalog\Model\ResourceModel\Product\CollectionFactory">
         <arguments>
-            <argument name="instanceName" xsi:type="string">\Magento\Catalog\Ui\DataProvider\Product\Collection</argument>
+            <argument name="instanceName" xsi:type="string">\Magento\Catalog\Ui\DataProvider\Product\ProductCollection</argument>
         </arguments>
     </virtualType>
     <type name="Magento\Catalog\Ui\DataProvider\Product\ProductDataProvider">
@@ -90,7 +90,7 @@
             <argument name="addFilterStrategies" xsi:type="array">
                 <item name="store_id" xsi:type="object">Magento\Catalog\Ui\DataProvider\Product\AddStoreFieldToCollection</item>
             </argument>
-            <argument name="collectionFactory" xsi:type="object">\Magento\Catalog\Ui\DataProvider\Product\CollectionFactory</argument>
+            <argument name="collectionFactory" xsi:type="object">\Magento\Catalog\Ui\DataProvider\Product\ProductCollectionFactory</argument>
         </arguments>
     </type>
     <type name="Magento\Catalog\Model\Product\Action">