Rails5: fix mysql milliseconds issue in deployment model specs
What does this MR do?
Rails 5 fix for milliseconds issues in spec/models/deployment_spec.rb
. Related to #48430 (closed)
Fixes ./spec/models/deployment_spec.rb:{86,106,119}
What are the relevant issue numbers?
Does this MR meet the acceptance criteria?
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Changelog entry added, if necessary -
Documentation created/updated -
Tests added for this feature/bug -
Conforms to the code review guidelines -
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Conforms to the database guides -
Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.