Improve systemd management during upgrades
Improve systemd management during upgrades


Former-commit-id: 7e47b6723a55a9a799e917fc06f4fdfe293edc91 [formerly 7e47b6723a55a9a799e917fc06f4fdfe293edc91 [formerly 48c83f7be68389e236aac98f144d1f3419cd3959]]
Former-commit-id: 8ad0e7dd9d3b4534bace0a4ff1b8c85e0d4bac24
Former-commit-id: 6279b9f87b0a08a193804d74eb87001c350dda4d
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine