Fix DMARC storage due to inconsistent naming, ref #1578 #1762

Job	Run time
build-docker (internet.nl, docker/Dockerfile, app)	1m 29s
build-docker (unbound, docker/Dockerfile, unbound)	53s
build-docker (linttest, docker/Dockerfile, linttest)	2m 47s
build-docker (test-runner, docker/test-runner.Dockerfile)	1m 3s
build-docker (webserver, docker/webserver.Dockerfile)	57s
build-docker (grafana, docker/grafana.Dockerfile)	53s
build-docker (util, docker/util.Dockerfile)	58s
docs	1s
lint/check	57s
development-environment-test	2m 53s
batch-integration-test	2m 35s
integration-test	3m 36s
test	1m 57s
	20m 59s

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