Gordo

Bugfix release, fixing release pipeline in github actions.

Workflow:
- Add PVC to grafana, fixing persistence issue

Model builder:
- Update threshold calculation for DiffBasedAnomalyDetector (924)
- Convert server-to-sql into a `Reporter` (863)
- Add MlFlowReporter (889)
- Raise more informative error on join_timeseries (892)
- Feature gates for mlflow and postgres reporters (891)
- Add 'dataset' key for build metadata (902)
- Include features thresholds per fold in metadata (919)

Server:
- Return 404 for metadata on non-existing model (917)
- Return 404 req to download non-existing model (918)
- Add server-version route (888)

Generall:
- Rename pipeline_from/into_definition -> from/into_definition (898)
- dataframe_from_dict: parse for int and sort (900)
- Upgrade to pandas 1.0.0
- Fix scikit-learn future warnings (923)

- Update serializer & fix KerasRawModelRegressor (874)
- Add high-priority to server deployment pod (852)
- Optimize argo lint of generated workflows (879)
- Remove gevent as explicit dependency (881)
- Add InsufficientDataAfterRowFilteringError to row_filter / Change EXCEPTION_TO_EXITCODE (880)
- Replace gevent with gthread (886)
- Don't fail workflow if codecov fails (887)

**New features** :sparkles:
* Add possibility to set n_splits (864)
* Precheck workflow generate gives valid yaml (851)

**Cleanup** :bath:
* Update outdated readthedocs config (860)
* Make metadata/machine use more consistent (854)

**Bug fixes** :bee:
* Update log_metadata tmp dir to local path (862)

**Dependency bumps** :fist_right: :fist_left:
* Bump dependencies (859)

:chart_with_downwards_trend: Grafana updates :chart_with_upwards_trend:
- Add aggregate-anomaly to Total Anomaly plot (850)

:hammer_and_wrench: CI and general fixes :hammer_and_pick:
- Add testformatting and allelse (840)
- Add MasterCI specific workflow (839)
- Fix MasterCI (842)
- Fix gordo components naming in docs (841)
- Remove unneccessary dependencies (846)
- Use pytest tmpdir fixture (849)

:up: Dependency bumps :arrow_up:
- Bump pyyaml from 5.2 to 5.3 (837)
- Bump azureml-contrib-run from 1.0.81 to 1.0.83 (836)
- Bump numpy from 1.18.0 to 1.18.1 (833)
- Bump numexpr from 2.7.0 to 2.7.1 (835)

- Rename gordo-components -> gordo (831)

Requires renaming all imports using `gordo_components` to `gordo`.
Related commands such as `gordo-components build ...` are now `gordo build ...`