Adding a context for bad DB state error handling #967

Job	Run time
Build wheels	53s
Unit test - ./extensions/gubbins/gubbins-logic	5m 48s
Unit test - ./extensions/gubbins/gubbins-core	6m 29s
client-generation	8m 22s
Unit test - ./extensions/gubbins/gubbins-client	5m 45s
Unit test - ./extensions/gubbins/gubbins-db	6m 42s
Unit test - ./extensions/gubbins/gubbins-cli	5m 8s
Unit test - ./extensions/gubbins/gubbins-routers	6m 5s
build-image	2m 39s
pytest-integration	18m 6s
	1h 5m 57s

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