Fix DMARC storage due to inconsistent naming, ref #1578 #1763

Job	Run time
build-docker (internet.nl, docker/Dockerfile, app)	1m 47s
build-docker (unbound, docker/Dockerfile, unbound)	53s
build-docker (linttest, docker/Dockerfile, linttest)	2m 30s
build-docker (test-runner, docker/test-runner.Dockerfile)	54s
build-docker (webserver, docker/webserver.Dockerfile)	51s
build-docker (grafana, docker/grafana.Dockerfile)	1m 6s
build-docker (util, docker/util.Dockerfile)	1m 3s
batch-integration-test	2m 52s
development-environment-test	2m 8s
docs	1s
integration-test	3m 32s
lint/check	46s
test	2m 13s
	20m 36s

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