Add deployment tests for the mirror

Write a set of end-to-end tests for the deployment of mirror using the test kafka topic namespace (swh/infra/sysadm-environment#4265 (closed)) as source.

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Migrated from T4336 (view on Phabricator)

added Mirror priority:High labels

marked this issue as related to #4337

changed title from Add a deployment test for the mirror to Add deployment tests for the mirror

changed the description

marked this issue as related to #4338

marked this issue as related to #4339

marked this issue as related to #4341

marked this issue as related to #4342