add test for cert delete and add (#33436)
add test for cert delete and add (#33436)

* add test for cert delete and add

Signed-off-by: Rama Chavali <40109507d7c707c570c476fc1522e2d26df7f15e@salesforce.com>

* lint

Signed-off-by: Rama Chavali <40109507d7c707c570c476fc1522e2d26df7f15e@salesforce.com>
istio/istio,istio/istio,istio/istio,istio/istio,istio/istio