add ctx parameter to ConsulStorage function calls which now require it
Set cs.Prefix properly --- setting the EnvNamePrefix environment variable does not work in the tests because that is only read if the module is be instantiated by Caddy, not during the tests. This not only actually uses the correct prefix, but now the KV cleanup done in setupConsulEnv cleans the proper path, so you can run tests multiple times in a row without errors because random K/V entries are left
ctxparameter to ConsulStorage function calls which now require itsetupConsulEnvcleans the proper path, so you can run tests multiple times in a row without errors because random K/V entries are leftsetupConsulEnv