CI/CD

fix possible scan issues with nil metadata when user reusing old email #814

Job	Run time
Verify Dockerfile (eskimo, linux/amd64)	3m 59s
Benchmark (users)	21s
Build	1m 45s
Lint	4m 49s
Verify Dockerfile (eskimo-hut, linux/amd64)	1m 55s
Benchmark (cmd/eskimo)	21s
Benchmark (cmd/eskimo-hut)	31s
Benchmark (users/internal/device/metadata)	25s
Test (users)	21s
Verify Auto Generated	56s
Verify Latest Versions	41s
Test (cmd/eskimo)	25s
Verify Licensing	19s
Test (cmd/eskimo-hut)	18s
Test (users/internal/device/metadata)	18s
PR	5s
Release	0s
Push Docker	0s
Trigger Deployment	0s
	17m 29s

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