fix: add correct start options to batcher spec

[Ziinc]

This PR adds in correct start options for the batcher spec, properly propagating the start options.

[josevalim]

💚 💙 💜 💛 ❤️

[coveralls]

Pull Request Test Coverage Report for Build db1f89ece26e9eae9a4e494e8edb14b8d3396174-PR-350

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
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• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 93.119%

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Totals
Change from base Build 41df5799011ce1734d50b7c1f08db0327dc1f2c0:	0.0%
Covered Lines:	636
Relevant Lines:	683

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💛 - Coveralls