Install wireguard tools also in minimal image

[igorpecovnik]

Description

Installing wireguard will also install stock Debian kernel which obviously will not work.

Jira reference number AR-2333 https://github.com/armbian/build/issues/6647

How Has This Been Tested?

• [ ] CI

Checklist:

Please delete options that are not relevant.

• [ ] My code follows the style guidelines of this project
• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] My changes generate no new warnings
• [ ] Any dependent changes have been merged and published in downstream modules