MC-33071: Stabilize Web-API tests

Author: zakdma

dev/tests/api-functional/testsuite/Magento/ConfigurableProduct/Api/OptionRepositoryTest.php

@@ -111,7 +111,7 @@ public function testGetUndefinedOption()
         try {
             $this->get($productSku, $attributeId);
         } catch (\SoapFault $e) {
-            $this->assertContains(
+            $this->assertStringContainsString(
                 $expectedMessage,
                 $e->getMessage(),
                 'SoapFault does not contain expected message.'

dev/tests/api-functional/testsuite/Magento/ConfigurableProduct/Api/ProductRepositoryTest.php

@@ -304,7 +304,7 @@ public function testUpdateConfigurableProductLinksWithNonExistingProduct()
             $this->saveProduct($response);
             $this->fail("Expected exception");
         } catch (\SoapFault $e) {
-            $this->assertContains(
+            $this->assertStringContainsString(
                 $expectedMessage,
                 $e->getMessage(),
                 "SoapFault does not contain expected message."
@@ -347,7 +347,7 @@ public function testUpdateConfigurableProductLinksWithDuplicateAttributes()
             $this->saveProduct($response);
             $this->fail("Expected exception");
         } catch (\SoapFault $e) {
-            $this->assertContains(
+            $this->assertStringContainsString(
                 $expectedMessage,
                 $e->getMessage(),
                 "SoapFault does not contain expected message."
@@ -380,7 +380,7 @@ public function testUpdateConfigurableProductLinksWithWithoutVariationAttributes
             $this->saveProduct($response);
             $this->fail("Expected exception");
         } catch (\SoapFault $e) {
-            $this->assertContains(
+            $this->assertStringContainsString(
                 $expectedMessage,
                 $e->getMessage(),
                 "SoapFault does not contain expected message."