heat 7.0.4 release

meta:version: 7.0.4
meta:diff-start: -
meta:series: newton
meta:release-type: release
meta:pypi: no
meta:first: no
meta:release:Author: ricolin <rico.lin@easystack.cn>
meta:release:Commit: ricolin <rico.lin@easystack.cn>
meta:release:Change-Id: I513a8fda737a63d003b0b57f78680bede42e3db2
meta:release:Code-Review+2: Doug Hellmann <doug@doughellmann.com>
meta:release:Workflow+1: Doug Hellmann <doug@doughellmann.com>
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