Use I-Builds to resolve platform CDT dependencies

Author: iloveeclipse

releng/org.eclipse.ui.releng/platformUiTools.p2f

@@ -129,7 +129,7 @@
     </iu>
     <iu id='org.eclipse.cdt.core.native' name='CDT native bits' version='0.0.0'>
         <repositories size='1'>
-            <repository location='https://download.eclipse.org/tools/cdt/releases/latest/'/>
+            <repository location='https://download.eclipse.org/eclipse/updates/I-builds'/>
         </repositories>
     </iu>
   </ius>