MAGETWO-52187: Magento re-install with minimum admin access breaks installation

- Backward Compatible Changes

Author: yvoronoy

setup/src/Magento/Setup/Controller/Install.php

@@ -273,7 +273,7 @@ private function importAdminUserForm()
     private function getDeploymentConfig()
     {
         if ($this->deploymentConfig === null) {
-            $this->deploymentConfig = \Magento\Framework\App\ObjectManager::getInstance()
+            $this->deploymentConfig = $this->installer->getObjectManagerProvider()->get()
                 ->get(\Magento\Framework\App\DeploymentConfig::class);
         }
         return $this->deploymentConfig;

setup/src/Magento/Setup/Model/Installer.php

@@ -476,6 +476,16 @@ public function installDeploymentConfig($data)
         $this->objectManagerProvider->reset();
     }
 
+    /**
+     * Get Object Manager Provider
+     *
+     * @return ObjectManagerProvider
+     */
+    public function getObjectManagerProvider()
+    {
+        return $this->objectManagerProvider;
+    }
+
     /**
      * Set up setup_module table to register modules' versions, skip this process if it already exists
      *