refactor: include output directory path warn log (#519)

Updated the `log.Printf` call to print `dir.String() `alongside the error to make failures easier to investigate.

This improves diagnostic logging when removing an output directory fails by including the directory path (quoted) in the warning message.

Signed-off-by: Ryan Johnson <ryan@tenthirtyam.org>

Author: tenthirtyam

builder/vmware/common/step_output_dir.go

@@ -108,7 +108,7 @@ func (s *StepOutputDir) Cleanup(state multistep.StateBag) {
 					break
 				}
 
-				log.Printf("[WARN] Failed to remove output dir: %s", err)
+				log.Printf("[WARN] Failed to remove output dir %q: %s", dir.String(), err)
 				time.Sleep(2 * time.Second)
 			}
 		}