revert back to github-token, credential onf-bat-bot reported mia for some reason

Change-Id: Ic1e20e9776e58732c51483ea62bfda4fa43e80e4
diff --git a/jjb/github-release/voltha.yaml b/jjb/github-release/voltha.yaml
index 4794e8b..8b5270f 100644
--- a/jjb/github-release/voltha.yaml
+++ b/jjb/github-release/voltha.yaml
@@ -27,7 +27,7 @@
           jenkins-ssh-credential: '{gerrit-ssh-credential}'
       - credentials-binding:
           - text:
-              credential-id: onf-bot-voltha
+              credential-id: github-release-token
               variable: GITHUB_TOKEN
 
     scm: