keps/prod-readiness: add sig-architecture/1143

spiffxp · spiffxp · commit a5a70712d393 · 2021-10-13T12:27:07.000-07:00
This was marked as stable in v1.21 as of 2021-04-xx. The PRR check
is only valid for anything v1.21 or later, but wasn't marked as
required until 2021-05-05.

I'm not sure if this never went through review, was previously exempt,
etc.
diff --git a/keps/prod-readiness/sig-architecture/1143.yaml b/keps/prod-readiness/sig-architecture/1143.yaml
@@ -0,0 +1,3 @@
+kep-number: 1143
+stable:
+  approver: "@wojtek-t"

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+kep-number: 1143`
	`2`	`+stable:`
	`3`	`+ approver: "@wojtek-t"`