don't return an error from log hook if value is not an error type

Signed-off-by: Steve Kriss <krisss@vmware.com>

changelogs/unreleased/2487-skriss

@@ -0,0 +1 @@
+bug fix: in error location logging hook, if the item logged under the `error` key doesn't implement the `error` interface, don't return an error since this is a valid scenario

pkg/util/logging/error_location_hook.go

@@ -60,7 +60,9 @@ func (h *ErrorLocationHook) Fire(entry *logrus.Entry) error {
 
 	err, ok := errObj.(error)
 	if !ok {
-		return errors.New("object logged as error does not satisfy error interface")
+		// if the value isn't an error type, skip trying to get location info,
+		// and just let it be logged as whatever it was
+		return nil
 	}
 
 	if errorLocationer, ok := err.(errorLocationer); ok {

pkg/util/logging/error_location_hook_test.go

@@ -47,7 +47,7 @@ func TestFire(t *testing.T) {
 			name:                "non-error logged in error field",
 			preEntryFields:      map[string]interface{}{logrus.ErrorKey: "not an error"},
 			expectedEntryFields: map[string]interface{}{logrus.ErrorKey: "not an error"},
-			expectedErr:         true,
+			expectedErr:         false,
 		},
 		{
 			name:           "pkg/errors error",