heat 19.0.0.0rc2 release candidate

meta:version: 19.0.0.0rc2
meta:diff-start: -
meta:series: zed
meta:release-type: release candidate
meta:pypi: no
meta:first: no
meta:release:Author: Takashi Kajinami <tkajinam@redhat.com>
meta:release:Commit: Takashi Kajinami <tkajinam@redhat.com>
meta:release:Change-Id: I469d70ebe703995949fbaf99b0703840052a51ff
meta:release:Code-Review+1: Rico Lin <ricolin@ricolky.com>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Code-Review+2: Hervé Beraud <herveberaud.pro@gmail.com>
meta:release:Workflow+1: Hervé Beraud <herveberaud.pro@gmail.com>
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