Features / Enhancements
* **CI**: Enable using several system tests systems, 578, hedingber
* **Models images**: Bound horovod to 0.20.x, 585, hedingber
* **Builder**: Support extra & verbose flags, 586, urihoenig
* **Builder**: Change registry URL configurations, 587, hedingber
* **DB migrations**: Added downgrade support and AlembicUtil Tests, 583, quaark
* **UI**: [Features & enhancment](https://github.com/mlrun/ui/releases/tag/v0.6.0-rc6#features-and-enhancements)
Bug fixes
* **System tests**: Wrap secrets with quotes, 584, hedingber
* **System tests**: Fix requirements, 574, hedingber
* **Dask**: Fix KubeCluster initialization, 575, hedingber
* **Nuclio**: Fix volume and volume mount creation, 579, hedingber
* **Runtimes**: Set jobs dbpath from configuration instead of client, 580, hedingber
* **Projects**: Skip old invalid project syncing + name validation fix, 576, hedingber
* **Docs**: Fix typos in mlrun-kit doc, 577, hedingber
* **UI**: [Bug fixes](https://github.com/mlrun/ui/releases/tag/v0.6.0-rc6#bug-fixes)
Pull requests:
00b9a23 [Builder] Change registry URL configurations (582)
86cf26c [DB migrations] Added downgrade support and AlembicUtil Tests (583)
8d2f857 [Builder] Support extra & verbose flags (586)
8f7e4ef [Models images] Bound horovod to 0.20.x (585)
20cc19d [System tests] Wrap secrets with quotes (584)
5b09079 [Runtimes] Set jobs dbpath from configuration instead of client (580)
59473d3 [Nuclio] Fix volume and volume mount creation (579)
afc56c0 [CI] Enable using several system tests systems (578)
2f1baaa [Docs] Fix typos in mlrun-kit doc (577)
728f1e2 [Projects] Skip old invalid project syncing + name validation fix (576)
c890439 [Dask] Fix KubeCluster initialization (575)
9ac8d8e [System tests] - Fix requirements (574)
4b6e62c [System tests] Add matplotlib as requirement (573)