[#596] Use zaptest.Logger

Use zaptest to get logs which get printed only if a test fails
or if you ran go test -v.

Dont use zaptest.Logger for fuzz otherwise ngfuzz/libfuzz crashes

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

api/layer/versioning_test.go

@@ -18,7 +18,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/stretchr/testify/require"
-	"go.uber.org/zap"
+	"go.uber.org/zap/zaptest"
 )
 
 func (tc *testContext) putObject(content []byte) *data.ObjectInfo {
@@ -139,7 +139,7 @@ type testContext struct {
 }
 
 func prepareContext(t *testing.T, cachesConfig ...*CachesConfig) *testContext {
-	logger := zap.NewExample()
+	logger := zaptest.NewLogger(t)
 
 	key, err := keys.NewPrivateKey()
 	require.NoError(t, err)