Debian packaging update

Update the requirements.txt and debian/control package dependencies introduced by the latest archiver code in swh-storage.

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Migrated from T404 (view on Phabricator)

mentioned in merge request !10 (closed)

assigned to @qcampos

marked this issue as related to #401 (closed)

added 2016-06-30 Storage manager priority:Normal labels

changed the description

mentioned in commit 53fbe53c

mentioned in commit swh-vault@e5346304

mentioned in commit swh-archiver@41248920

closed

mentioned in merge request !7 (closed)