Add macaddr uniqueness

[hulto]

What type of PR is this?

What this PR does / why we need it:

• Fix build time keys
• Add mac addr uniqueness

Which issue(s) this PR fixes:

Fixes #1594

[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
2655    ±0	2655    ±0	0    ±0	0    ±0	0    ±0	0    ±0	1ms    ±0

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#1125	✅	2655	2655	0	0	0	0	38.0s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
2655	0	0	5.6s

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
TestDockerExecutor_Build_ContextCancellation	1	5.6s	5.6s
eldritch-libsys: std::dll_inject_impl::tests::test_dll_inject_simple	1	5.1s	5.1s
TestInteractiveShell	1	5.1s	5.1s
TestOtherStreamOutput	1	5.0s	5.0s
imix::bin/imix: install::tests::test_install_execution	3	1.5s	4.3s
imix::bin/imix: install::tests::test_install_execution	3	1.5s	4.3s
imix::bin/imix: install::tests::test_install_execution	3	1.5s	4.3s
imix::bin/imix: tests::task_tests::test_task_streaming_output	3	3.1s	3.1s
imix::bin/imix: tests::task_tests::test_task_streaming_output	3	3.1s	3.1s
imix::bin/imix: tests::task_tests::test_task_streaming_output	3	3.1s	3.1s

_{🎉 No failed tests in this run. | 🍂 No flaky tests in this run.}

Github Test Reporter by CTRF 💚

🔄 This comment has been updated

[KCarretto]

It looks like this struct is shared across all platforms but redefined for each of them