Linter fixes PR 3 (#4415)

* Linter fixes

* fix(bsr): update test to register TEST protocol once

---------

Co-authored-by: Damian Debkowski <damian.debkowski@hashicorp.com>

internal/daemon/controller/testing_test.go

@@ -52,7 +52,7 @@ func Test_TestController(t *testing.T) {
 			// copy the output in a separate goroutine so writing to stderr can't block indefinitely
 			go func() {
 				var buf bytes.Buffer
-				io.Copy(&buf, r)
+				_, _ = io.Copy(&buf, r)
 				outC <- buf.String()
 			}()