* fix any's in tests
* fix more any's in tests
* more test type fixes
* fixing any's in tests part 3
* more test type fixes
* fixing test any's p5
* some tidy up
* fix template_srv
The fetch() API won't send cookies or other type of credentials unless
you set the credentials init option. Some datasources like Prometheus
and Elasticsearch have `withCredentials` option in Browser access mode,
but this option is not currently getting passed in the fetch() API.
Fixes#23338.