meshConfig: add validation for ingressgateway certificate
Validation added to the subjectAltName for the ingress gateway
certificate. Going forward, this field if specified will have to contain
atleast one element in the array.
Fixes
@@ -194,6 +194,7 @@ spec:
type: array
items:
type: string
+ minItems: 1
validityDuration:
description: Certificate validity duration, represented as a sequence of decimal numbers each with optional fraction and a unit suffix
type: string
