Ignore coverage in generated files

[NatsuOnFire]

PR to resolve issue #1826

[cla-bot]

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[NatsuOnFire]

@cla-bot check

[NatsuOnFire]

@cla-bot check

[cla-bot]

The cla-bot has been summoned, and re-checked this pull request!

[nirinchev]

Hey, thanks for this PR! I cherry-picked your commits (PR: #1828) over to the community branch, which is what we're using for non-sync changes. Tests seem to be all green and I'm going to go ahead and merge them.