Merge branch 'develop' into 'master'

Merge branch 'develop' into 'master'

fixed django model permissions

Fixed sorting and ordering in pagination, fixed decimal fields in hardware usage serializer

added support for disk volumes in topology definitions, bugfix: caching of authentication now actually works, admin panel is no longer accessible with the admin admin credentials, moved SECRET_KEY from settings.py to config.yml, bugfix: more than two ansible workers can be now deployed simultaneously

This is an experimental tag. It excludes backwards incompatible changes form the current master branch on purpose.

Switch to kubernetes volume path from hostPath for ansible_runner files, enabled restart of first allocation stage,  enabling deletion of sandbox right after its allocation, added endpoints to retrieve variable names in variables.yml based on defintion and pool id

Fix Kubernetes integration and bump package versions.

Merge develop into a master branch.

Bump Terraform client version.

Refactoring of Dockerfile and config.yml.

Fix the endpoint to retrieve topology visualization data from the topology definition.

Get topology visualization data from the topology definition. Remove the limit of sandboxes for the pool. Add filtering options for resource endpoints.

Update user ssh config file.