Harmonize Workspace Tableau dashboards

MR: Pending

Description

For current what total metrics we have created, pls see the link here, https://metrics.gitlab.com/?status=active&productGroup=remote_development&productCategory=workspaces

(For existing metrics, pls see this link, and the top ones without product_category)

To sum up what we have on the board,

• workspace_created
  • succeed_workspace_created
  • failed_workspace_created
  • succeed_&_failed_workspace_created
  • failed_workspace_created_by_reasons (2 failure category in total, and 4 relating to devfile validation are moved to devfile validation event)
• workspace_started
  • new_workspace_started
  • existing_workspace_started
  • new_&_existing_workspace_started
• open_workspace_button_clicks
• new_workspace_button_clicks
  • for project page button
  • for MR page button
  • for all workspaces page button
• devfile_validate_result
  • total_failed_devfile_validated
  • failed_by_devfile_yaml_parse
  • failed_by_devfile_yaml_load
  • failed_by_devfile_yaml_flatten
  • failed_by_devfile_restrictions

Most metrics would have 3 timeframes(7d, 28d, and all-time). For example, we have,

• counts.count_total_existing_workspaces_started
• counts.count_total_existing_workspaces_started_weekly
• counts.count_total_existing_workspaces_started_monthly

We should be able to achieve a few metrics with above defined, for example, workspace creation failure rate, workspace creation failure by reasons.

Acceptance criteria

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• [Describe what must be achieved to complete this issue.]
• [If applicable, please provide design specifications for this feature/enhancement.]
• [If applicable, please list any technical requirements (performance, security, database, etc.)]

Implementation plan

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[Provide a high-level plan for implementation of this issue, including relevant technical and/or design details.]