Performing an offline LDIF import using a compressed file

Steps

Confirm the PingDirectory server is offline.
To import data from a compressed gzip formatted file, use the import-ldif command.

You must include the --isCompressed option to indicate that the input file is compressed.

Do not specify any connection arguments when running the command.

Example:
```
$ bin/import-ldif --backendID userRoot --isCompressed \
  --ldifFile /path/to/data.gz --rejectFile /path/to/reject.ldif \
  --skipFile /path/to/skip.ldif
```