Patch dea env

[santoshamohan]

Reason for this pull request

Datacube ingest, datacube-fc, datacube-wofs, and datacube-stats apps had issues with latest revision of dask, distributed, and redis-py python conda packages.

Proposed solutions

Revert dask, distributed, and redis-py conda packages to last know working revisions.

• Workaround for [https://github.com/GeoscienceAustralia/digitalearthau/issues/205] and [https://github.com/opendatacube/datacube-core/issues/658]