Context:
To enable the use of default settings for Dashboard filters, the BE needs to adjust to DashboarFilter Dtos to allow us to store these default values.
Details for the structure here: https://confluence.camunda.com/display/CO/2021-06-01+Default+Dashboard+Filters%3A+Technical+Kickoff?src=jira
This will also require some refactoring of the existing Dashboard variable filter structure to allow for different defaultvalue types for different variabe types.
No further validation of the content of this field is required as the FE will take care of this (eg ensure only available values are used in defaultValues)
AT:
- DashboardFilters include a field for defaultValues
- we might also need a migration to add this new field to existing filters
- confluence is adjusted accordingly