Remove lease from Event#reset_project_activity
What does this MR do?
This removes the exclusive lease used by Event#reset_project_activity in favour of conditional UPDATE queries. See dbcc623a for more information.
Why was this MR needed?
Obtaining the lease can, for whatever reason, be really slow. See https://gitlab.com/gitlab-org/gitlab-ce/issues/22473 for more information.
Does this MR meet the acceptance criteria?
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CHANGELOG entry added - Tests
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Added for this feature/bug -
All builds are passing
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Conform by the merge request performance guides -
Conform by the style guides -
Branch has no merge conflicts with master(if you do - rebase it please) -
Squashed related commits together