* stable-3.1:
Set version to 3.1.0-rc2
Post/Delete GPG keys: Do not return 409 Conflict if an error occurred
DeleteRef: Do not return 409 Conflict if an error occurred
DeleteRef: Do not log an error if user attempted to delete the current branch
Init: Increase severity log level to error on exceptions
Bazel: Fix genrule2 to clean up temporary folder content
AbstractIndexTests: Inline constant assertChangeQuery string parameter
AbstractIndexTests: Align assertChangeQuery method access with its use
AbstractIndexTests: Provide default configureIndex method implementation
XContentBuilder: Use JsonFactory.builder() and new feature enums
Do not allow RobotoMono-Regular to stand in for Roboto
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Change-Id: I3320b77547c321be0ec0da51ad9ed5e1b1973074
b3535d33f8