Rename trove grenade job
The job has moved in-tree, use the new name.
irrelevant-files:
- ^.*\.rst$
- ^doc/.*$
- - legacy-grenade-dsvm-trove:
+ - trove-grenade:
branches: ^(?!(driverfixes|stable/(mitaka|newton))).*$
irrelevant-files:
- ^.*\.rst$
