Unable to skip overwriting local snapshot using one line command

[dinhtungdu]

Describe the bug

Currently, there is no way to skip overwriting local snapshot use one line command because the --overwrite_local_copy option doesn't accept any value. This option should be able to skip using one line command like --include_db or --include_files.

By the way, this breaks wpacceptance test because of overwriting snapshot issue inside the WPA docker container:

Warning: rmdir(/root/.wpsnapshots/a3f2959614a18989ea365da4d86945f1/): Device or resource busy in /root/.composer/vendor/10up/wpsnapshots/src/utils.php on line 359

IMO, in the WPA context, it's safe to always skip overwriting local snapshots because the latest snapshot is pulled at the creation time of the docker container.