MAGETWO-35264: Unable to request Soap service without plugging in CustomAttributeMap config

- Removed unused variable
- Updated test case

Author: anupdugar

app/code/Magento/Eav/Model/EavCustomAttributeTypeLocator.php

@@ -80,7 +80,7 @@ public function getAllServiceDataInterfaces()
             return [];
         } else {
             foreach ($this->serviceBackendModelDataInterfaceMap as $serviceArray) {
-                foreach ($serviceArray as $backendModel => $dataInterface) {
+                foreach ($serviceArray as $dataInterface) {
                     $dataInterfaceArray[] = $dataInterface;
                 }
             }

app/code/Magento/Eav/Test/Unit/Model/EavCustomAttributeTypeLocatorTest.php

@@ -158,13 +158,14 @@ public function testGetAllServiceDataInterface()
     {
         $serviceBackendModelDataInterfaceMapData = [
             'ServiceA' => ['BackedA' => 'ServiceDataInterfaceA'],
-            'ServiceB' => ['BackedB' => 'ServiceDataInterfaceB'],
-            'ServiceC' => ['BackedC' => 'ServiceDataInterfaceC']
+            'ServiceB' => ['BackedB' => 'ServiceDataInterfaceB', 'BackedC' => 'ServiceDataInterfaceC'],
+            'ServiceC' => ['BackedD' => 'ServiceDataInterfaceD']
         ];
         $this->eavCustomAttributeTypeLocator = new EavCustomAttributeTypeLocator(
-            $this->attributeRepository, [], $serviceBackendModelDataInterfaceMapData);
+            $this->attributeRepository, [], $serviceBackendModelDataInterfaceMapData
+        );
         $this->assertEquals(
-            ['ServiceDataInterfaceA', 'ServiceDataInterfaceB', 'ServiceDataInterfaceC'],
+            ['ServiceDataInterfaceA', 'ServiceDataInterfaceB', 'ServiceDataInterfaceC', 'ServiceDataInterfaceD'],
             $this->eavCustomAttributeTypeLocator->getAllServiceDataInterfaces()
         );
     }