Update package.xml

When deploying the same application, the follwing errors are thrown.

Failures:
classes/OpportunitiesServiceTestIntegration.cls(OpportunitiesServiceTestIntegration):Not in package.xml
classes/OpportunityApplyDiscountControllerTestI.cls(OpportunityApplyDiscountControllerTestI):Not in package.xml

Author: Mthobisi

fflib-sample-code/src/package.xml

@@ -25,9 +25,11 @@
 		<members>OpportunitiesService</members>
 		<members>OpportunitiesServiceImpl</members>
 		<members>OpportunitiesServiceTest</members>
+		<members>OpportunitiesServiceTestIntegration</members>
 		<members>OpportunitiesTest</members>
 		<members>OpportunityApplyDiscountController</members>
 		<members>OpportunityApplyDiscountControllerTest</members>
+		<members>OpportunityApplyDiscountControllerTestI</members>
 		<members>OpportunityConsoleController</members>
 		<members>OpportunityCreateInvoiceController</members>
 		<members>OpportunityInvoicingController</members>
@@ -98,4 +100,4 @@
 		<name>WebLink</name>
 	</types>
 	<version>31.0</version>
-</Package>
+</Package>