Merge pull request #6348 from ehashman/slack-swap

Add slack channel for coordinating swap implementation

Author: k8s-ci-robot

communication/slack-config/channels.yaml

@@ -379,6 +379,7 @@ channels:
   - name: sig-node-bug-scrub
   - name: sig-node-rkt
     archived: true
+  - name: sig-node-swap
   - name: sig-scalability
   - name: sig-scheduling
   # sig-security* channels are defined in sig-security/