Fix #714 - Switch to (mainly) sslyze for TLS testing #1553

Job	Run time
build-docker (internet.nl, docker/Dockerfile, app)	39s
build-docker (unbound, docker/Dockerfile, unbound)	41s
build-docker (linttest, docker/Dockerfile, linttest)	56s
build-docker (test-runner, docker/test-runner.Dockerfile)	37s
build-docker (webserver, docker/webserver.Dockerfile)	47s
build-docker (grafana, docker/grafana.Dockerfile)	37s
build-docker (util, docker/util.Dockerfile)	46s
integration-test	4m 25s
docs	1s
test	2m 40s
lint/check	54s
batch-integration-test	4m 13s
development-environment-test	2m 19s
	19m 35s

Provide feedback