Add operator support to e2e tests (#17864)
Add operator support to e2e tests (#17864)

* Add operator support to e2e tests

This adds a --use_operator flag to the e2e tests. The e2e tests
expect a different component to store a manifest for deployment
in the $ISTIO/install/kubernetes directory.

One aspect of this test case is incorrect. Deletion of the operator
appears not to work within the test framework. The namespace locks
up with the namespace in the terminating state.

* run through `go format`

* Address reviewer comments.

* Fix unused module error

geeknoid/istio,geeknoid/istio,geeknoid/istio,smawson/istio,geeknoid/istio,smawson/istio,smawson/istio,smawson/istio,smawson/istio,istio/istio,istio/istio,istio/istio,geeknoid/istio,istio/istio,smawson/istio,istio/istio,geeknoid/istio