* Variables: turns on newVariables as default
* Chore: adds default templating state
* Some small refactorings to get the template_srv tests to get green when toggle is enabled by default.
* Refactor: adds getVariables dependency to DashboardModel
* Tests: fixes StackDriver tests
* Tests: updates snapshots
* Tests: updates snapshot for DashboardGrid.test.tsx
* Tests: fixes DashboardModel.test.ts
* fixed initDashboard tests.
* renamed variable.
* changed so we use the templating.list when running the migration work.
* changed so we always returns the variables in sorted order.
* Tests: fixed cloudwatch tests
* added so we set the global template variable props.
* Fixed tests and added moved logic to complete templateSrv variables.
* removed unneccesary updateIndex.
Co-authored-by: Marcus Andersson <marcus.andersson@grafana.com>
* Refactor: moves all the newVariables part to features/variables directory
* Feature: adds datasource type
* Tests: adds reducer tests
* Tests: covers data source actions with tests
* Chore: reduces strict null errors
