Update usages with expected location of 7zz binary

[ChrisThibodeaux]

Replace the leftover code spots pointing to /usr/bin/7z.

@doomedraven
My preferred fix:

1. Set 7zz binary relative location in only one place in one config file.
2. Create a constant using SEVENZIP_BIN = os.path.join(CUCKOO_ROOT, <config_value>) that can be imported where needed.

Let me know if I should do that instead and I will make the changes to this PR.

[gemini-code-assist]

Summary of Changes

Hello @ChrisThibodeaux, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates all references to the 7-Zip (7zz) binary location from the system-wide /usr/bin/7z to a relative path within the application's data/7zz directory. This ensures consistency and proper discovery of the 7zz executable across various configurations and Python modules.

Highlights

• Configuration Updates: Modified processing.conf.default and reporting.conf.default to point the 7-Zip binary path to data/7zz.
• Python Code Adjustments: Updated lib/cuckoo/common/integrations/file_extra_info.py to use os.path.join(CUCKOO_ROOT, "data/7zz") for the 7-Zip binary path and adjusted related comments and command execution.
• Processing Module Fix: Corrected the hardcoded path in a comment and the command string within modules/processing/suricata.py to reflect the new data/7zz location.

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[gemini-code-assist]

Code Review

This pull request updates the path for the 7zip binary across configuration files and Python scripts, replacing hardcoded paths with a path relative to the application's root. The changes are mostly correct and improve the portability of the application.

However, I've found an issue in modules/processing/suricata.py where the updated relative path for the 7zip binary is used in a way that will cause an error at runtime. I've left a comment with details on the issue and a suggestion for a fix.

[doomedraven]

thank you