C#: Update remote flow sources test to also report tainted members.

Author: michaelnebel

csharp/ql/test/library-tests/dataflow/flowsources/remote/remoteFlowSource.expected

@@ -1,3 +1,5 @@
+remoteFlowSourceMembers
+remoteFlowSources
 | Controller.cs:11:43:11:52 | sampleData | ASP.NET MVC action method parameter |
 | Controller.cs:11:62:11:66 | taint | ASP.NET MVC action method parameter |
 | Controller.cs:16:43:16:52 | sampleData | ASP.NET MVC action method parameter |

csharp/ql/test/library-tests/dataflow/flowsources/remote/remoteFlowSource.ql

@@ -1,5 +1,7 @@
 import semmle.code.csharp.security.dataflow.flowsources.Remote
 
-from RemoteFlowSource source
-where source.getLocation().getFile().fromSource()
-select source, source.getSourceType()
+query predicate remoteFlowSourceMembers(TaintTracking::TaintedMember m) { m.fromSource() }
+
+query predicate remoteFlowSources(RemoteFlowSource source, string type) {
+  source.getLocation().getFile().fromSource() and type = source.getSourceType()
+}