INFRA: Update the slack options for projects

Below changes are introduced:
- Push upstream slack notification are removed. The job failures should
  be handled as part of the Gerrit review by a person who is
  trying to push the change to upstream.
- Introduce slack notifications for Geode jobs to #geode
  Slack channel.

Change-Id: Ie625ed4bc667b4268f6ab8d1d967561873ed1c2b
diff --git a/jjb/global/global-templates-rebase.yaml b/jjb/global/global-templates-rebase.yaml
index d463b62..7ae7d22 100644
--- a/jjb/global/global-templates-rebase.yaml
+++ b/jjb/global/global-templates-rebase.yaml
@@ -46,3 +46,7 @@
     publishers:
       - notify-slack:
           slack-channel: '#infra'
+          notify-start: false
+          notify-success: false
+          notify-failure: true
+          notify-back-to-normal: true