FileSystemConnector should perform validation on filenamefilter

  Session session = RepositoryReferenceFactory.getRepository("test-file").login();
  ValueFactory vf = session.getValueFactory();

  Node root = session.getRootNode();
  Node file = root.addNode("createfile.mode", "nt:file");
  Node content = file.addNode("jcr:content", "nt:resource");
  content.setProperty("jcr:data", vf.createBinary(new ByteArrayInputStream("Write 1".getBytes())));
  session.save();

  session.getNode("/createfile.mode");

javax.jcr.PathNotFoundException: Unable to find "{}createfile.mode"; lowest existing path is "/"
        at org.modeshape.jcr.JcrSession.getNode(JcrSession.java:779)
        at org.modeshape.jcr.JcrSession.getNode(JcrSession.java:649)
        at org.modeshape.jcr.JcrSession.getNode(JcrSession.java:106)
        at org.jboss.soa.modeshape.qa.tests.BrokenFileConnectorTest.fileCreate(BrokenFileConnectorTest.java:31)

   <mode:source jcr:name="test-file"
                mode:classname="org.modeshape.connector.filesystem.FileSystemSource"
                mode:creatingWorkspaceAllowed="true"
                mode:retryLimit="3"
                mode:defaultWorkspaceName="default"
                mode:filenameFilter="*.mode"
                mode:updatesAllowed="true">
     <xsl:attribute name="mode:workspaceRootPath">
       <xsl:value-of select="$repositorypath"/>
     </xsl:attribute>
     <mode:predefinedWorkspaceNames>file1</mode:predefinedWorkspaceNames>
     <mode:predefinedWorkspaceNames>file2</mode:predefinedWorkspaceNames>
     <mode:predefinedWorkspaceNames>custom-federated</mode:predefinedWorkspaceNames>
   </mode:source>