workflows: investigate REANA API and integration

[pamfilos]

• [x] investigate REANA API
• [x] upgrade dependencies/installation to latest version
• [x] check status of REANA integration in CAP

[ParthS007]

REANA API Integration Tasks.

REANA discuss issue - https://github.com/reanahub/reana-server/issues/470

The latest version of REANA client added more commands which we can implement in CAP.

• Quota commands:

  • [x] quota-show - Show user(experiment) quota.

• Configuration commands:

  • [x] info - List cluster general information.
  • [x] ping - Check connection to REANA server.

• Workflow management commands:

  • [x] create - Create a new workflow.
  • [x] delete - Delete a workflow.
  • [x] list - List all workflows and sessions.

• Workflow execution commands:

  • [x] logs - Get workflow logs.
  • [x] restart - Restart previously run workflow.
  • [x] run - Shortcut to create, upload, start a new workflow.
  • [x] start - Start previously created workflow.
  • [x] status - Get status of a workflow.
  • [x] stop - Stop a running workflow.
  • [x] validate - Validate workflow specification file.

• Workspace file management commands:

  • [x] download - Download workspace files.
  • [x] du - Get workspace disk usage.
  • [x] ls - List workspace files.
  • [x] mv - Move files within workspace.
  • [x] rm - Delete files from workspace.
  • [x] upload - Upload files and directories to workspace.

• TBD - REANA does not expose user API until now, we have to use the token and server url from the REANA UI as env variables to use REANA client.