Updated example for parameterized and holistic usage

[macleanj]

Updated example for parameterized and holistic usage (any service, any region). Normalized tagging of all resources that are created.

Description

The execution of this example failed for the following reasons:

• necessary parameters were not parametrized. Region was hard coded and not parameterized. All instances of "region" needed to be updated to make it work
• the instance was not accessible from the cluster. This is by default fixed (NAT gateway no longer needed as instance now resides in a public subnet)
• the instance was not accessible from the internet. Security group auto-updated with port 80
• Hard to find resources that belong together. Updated names and tagging.

Apologies for the big changes made. Next time I'll make them smaller ;-)

[antonbabenko]

This example is too specific and includes more than necessary to show how the ECS module works. I have updated it a bit in #25 and going to close this PR.

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.