* upgrade vault dependency set

* etcd and grpc issues:

* better for tests

* testing

* all upgrades for hashicorp deps

* kubernetes plugin upgrade seems to work

* kubernetes plugin upgrade seems to work

* etcd and a bunch of other stuff

* all vulnerable packages upgraded

* k8s is broken in linux env but not locally

* test fixes

* fix testing

* fix etcd and grpc

* fix etcd and grpc

* use master branch of go-testing-interface

* roll back etcd upgrade

* have to fix grpc since other vendors pull in grpc 1.35.0 but we cant due to etcd

* rolling back in the replace directives

* a few more testing dependencies to clean up

* fix go mod vendor