* 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>