gerrit templates: fix jenkins/lint warnings

Warning: Variable access via 'replication' is deprecated. Use '@replication' instead
Warning: Variable access via 'smtp_host' is deprecated. Use '@smtp_host' instead.

just fixing warnings i see in puppet-compiler when
i ran something else on ytterbium and this was just noise
in the output

Change-Id: I80a887e2e270e0f9ec62630e57a6fd18d6ed8ec9
Merge "gerrit templates: fix jenkins/lint warnings" into production