Improve the Azure cloud auto join documentation (#8530)
Improve the Azure cloud auto join documentation (#8530)

* Update the Azure cloud auto join documentation with more explicit information on how to configure the infrastructure.
* Add a note regarding the length of time taken for Azure to sync the MSI permissions.
* Update references from tag_name to tag_key in the Azure examples
Co-authored-by: Jono Sosulska <42a535bcda062b44df2749a2b1c753b312c21911@users.noreply.github.com>
hashicorp/consul,hashicorp/consul,hashicorp/consul,hashicorp/consul