Use Google code formatter on 3.x

Description

We've been testing it on the 4.x branch with great results.

Configure the com.coveo:fmt-maven-plugin in the build.
Format all the existing sources.

Environment

None

Pull Requests

None
Fixed

Assignee

Andy Tolbert

Reporter

Olivier Michallat

Labels

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PM Priority

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Affects versions

None

Fix versions

Pull Request

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Doc Impact

None

Size

None

External issue ID

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External issue ID

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Priority

Minor
Configure