MAGETWO-86880: #7213: [GitHub] WEBAPI: PHP session is always started #1247

 - Merge Pull Request magento-engcom/magento2ce#1247 from serhii-balko/magento2:github-7213
 - Merged commits:
   1. a282973d
   2. 6a586105

app/code/Magento/Customer/etc/webapi_rest/di.xml

@@ -13,7 +13,7 @@
         <arguments>
             <argument name="userContexts" xsi:type="array">
                 <item name="customerSessionUserContext" xsi:type="array">
-                    <item name="type" xsi:type="object">Magento\Customer\Model\Authorization\CustomerSessionUserContext</item>
+                    <item name="type" xsi:type="object">Magento\Customer\Model\Authorization\CustomerSessionUserContext\Proxy</item>
                     <item name="sortOrder" xsi:type="string">20</item>
                 </item>
             </argument>

app/code/Magento/User/etc/webapi_rest/di.xml

@@ -10,7 +10,7 @@
         <arguments>
             <argument name="userContexts" xsi:type="array">
                 <item name="adminSessionUserContext" xsi:type="array">
-                    <item name="type" xsi:type="object">Magento\User\Model\Authorization\AdminSessionUserContext</item>
+                    <item name="type" xsi:type="object">Magento\User\Model\Authorization\AdminSessionUserContext\Proxy</item>
                     <item name="sortOrder" xsi:type="string">30</item>
                 </item>
             </argument>