Update CODE OF CONDUCT for CNCF compliance (#9779)

Signed-off-by: Daniel Jiang <daniel.jiang@broadcom.com>

Author: reasonerjt

CODE_OF_CONDUCT.md

@@ -1,3 +1,23 @@
+# Velero Code of Conduct
+
+Velero is a [Cloud Native Computing Foundation](https://www.cncf.io/) sandbox
+project. As a CNCF project, the Velero community follows the
+[**CNCF Code of Conduct**](https://github.com/cncf/foundation/blob/main/code-of-conduct.md).
+
+The text below is the project's adopted Code of Conduct, based on the
+[Contributor Covenant](https://www.contributor-covenant.org/), and is
+substantively aligned with the CNCF Code of Conduct. Where any conflict exists,
+the CNCF Code of Conduct prevails.
+
+Instances of unacceptable behavior may be reported to the CNCF Code of
+Conduct Committee at [conduct@cncf.io](mailto:conduct@cncf.io). For more
+detailed instructions on how to submit a report, including how to submit a
+report anonymously, please see the CNCF
+[Incident Resolution Procedures](https://github.com/cncf/foundation/blob/main/code-of-conduct/coc-incident-resolution-procedures.md).
+You can expect a response within three business days.
+
+---
+
 # Contributor Covenant Code of Conduct
 
 ## Our Pledge
@@ -59,7 +79,8 @@ representative at an online or offline event.
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported to the community leaders responsible for enforcement at oss-coc@vmware.com.
+reported by contacting the CNCF Code of Conduct Committee at
+[conduct@cncf.io](mailto:conduct@cncf.io).
 All complaints will be reviewed and investigated promptly and fairly.
 
 All community leaders are obligated to respect the privacy and security of the