KEP-3203: Add Auto-refreshing Official CVE feed (kubernetes#3204)

* Add Auto-refreshing official CVE feed KEP

Updates based on PR feedback
- Revisited section placements
- Added clarity on use of labels under risks
- Update toc
- Apply suggestions from code review
- Added CVE project as non-goal
- Made machine-readability as explicit goal

Updates to use google bucket + dynamic page generation for k/website flow

Added more clarity in alternatives considered section

Co-authored-by: Tim Bannister <[email protected]>

Signed-off-by: Pushkar Joglekar <[email protected]>

* Apply suggestions from code review

Co-authored-by: Mahé <[email protected]>
Co-authored-by: Batuhan Apaydın <[email protected]>
Co-authored-by: Cailyn <[email protected]>
And Eric Smalling
Added link to existing options that are broken or incomplete

Add testing sections for v1.25

Co-authored-by: Rey Lejano <[email protected]>

* Update PRR approver

ehashman->johnbelamaric

kep 3203 add test plan graduation criteria

Signed-off-by: Neha Lohia <[email protected]>

Co-authored-by: Rey Lejano <[email protected]>

Author: PushkarJ

keps/prod-readiness/sig-security/3203.yaml

@@ -0,0 +1,3 @@
+kep-number: 3203
+alpha:
+  approver: "@johnbelamaric"