* Cloud monitoring: out-of-the-box dashboards

* Remove redundant information related to dev account

* Update docs/sources/features/datasources/cloudmonitoring.md

Co-authored-by: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

* Rename JSON files

* Fix docs

* Fixe docs

* Parameterise dashboards by CM datasource

* Fix metric kind in CloudSQL dashboard

* Set alias to instance name for GCE dashboard panels

Co-authored-by: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>