Allow specifying a custom app label alias when shipping logs via vector #5630

All 414 tests pass, 2 skipped in 3h 40m 4s

416 tests +11 414 ✅ +11 3h 40m 4s ⏱️ - 1m 15s
75 suites + 1 2 💤 ± 0
75 files + 1 0 ❌ ± 0

Results for commit bc6f75f. ± Comparison against earlier commit c59656f.