Allow not destroying dev databases (#366)

This also shifts some logic around to better prepare for non-dev-mode
workloads, although it does not actually call the KMS creation functions
and initial auth method creation from non-dev commands yet.

internal/servers/controller/handler_test.go

@@ -17,6 +17,7 @@ import (
 func TestAuthenticationHandler(t *testing.T) {
 	c := NewTestController(t, &TestControllerOpts{
 		DisableAuthorizationFailures: true,
+		DefaultAuthMethodId:          "ampw_1234567890",
 		DefaultLoginName:             "admin",
 		DefaultPassword:              "password123",
 	})