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Hello Everyone,

Finally, after so many cycles, grenade base job has been migrated to zuulv3 native[1]. This is
merged in the Ussuri branch.

Thanks to tosky for keep working on this and finish it!!

New jobs 'grenade', 'grenade-multinode', 'grenade-postgresql' and 'grenade-forward' are
zuulv3 native now and we kept old job name  'grenade-py3' as an alias to 'grenade' so that it would
not break the gate using 'grenade-py3'.

* Start using this new base job for your projects specific grenade jobs.

* Migration to new job name:
The integrated template and projects are using old job name 'grenade-py3' need to move to
a new job name. Job is defined in the integrated template and also in the project's zuul.yaml for irrelevant-files.
So we need to switch both places at the same time otherwise you will be seeing the two jobs running on your gate
(master as well as on Ussuri). 

Integrated service specific template has switched to new job[2] which means you might see two jobs running
'grenade' & 'grenade-py3' running on your gate until you change .zuul.yaml. Example: Nova did for master as well as Ussuri gate - https://review.opendev.org/#/q/I212692905a1d645cd911c2a161c13c794c0e0f4d

It needs to be done in Ussuri also as Tempest where integrated templates are present is branchless and apply the change for Ussuri job also.

[1] https://review.opendev.org/#/c/548936/
[2] https://review.opendev.org/#/c/722551/
 
-gmann