change find command to ignore /var/log/lastlog

[y-me-y]

The find tends to detect the lastlog because it's been recently modified. the lastlog can report as very large on disk and when copying to the temp directory, erroneously creates a large tar.gz file.

Note
The lastlog file is a database which contains info on the last login of each user. You should not rotate it. It is a sparse file, so its size on the disk is usually much smaller than the one shown by "ls -l" (which can indicate a really big file if you have in passwd users with a high UID). You can display its real size with "ls -s".

Description

The find tends to detect the lastlog because it's been recently modified. the lastlog can report as very large on disk and when copying to the temp directory, erroneously creates a large tar.gz file. this change just ignores the lastlog file.

Issues Resolved

N/A but had this bug come up a couple times for existing customers.

Check List

• New functionality includes tests
• All buildkite tests pass
• Full omnibus build and tests in buildkite pass
• All commits have been signed-off for the Developer Certificate of Origin. See https://github.com/chef/chef/blob/main/CONTRIBUTING.md#developer-certification-of-origin-dco
• PR title is a worthy inclusion in the CHANGELOG

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[PrajaktaPurohit]

Thank you very much for the detailed description and the change PR! Much appreciated!