Add legacy parameter

Author: rmarinho

eng/pipelines/common/provision.yml

@@ -40,7 +40,9 @@ steps:
 
 - ${{ if and(eq(variables['System.TeamProject'], 'devdiv'), ne(parameters.skipInternalFeeds, 'true')) }}:
   - template: ../../common/templates-official/steps/enable-internal-sources.yml
-
+    parameters:
+      legacyCredential: $(dn-bot-dnceng-artifact-feeds-rw)
+      
   - template: ../../common/templates-official/steps/enable-internal-runtimes.yml
     parameters:
       federatedServiceConnection: ${{ parameters.federatedServiceConnection }}