Fix: namespace and environment are misused

[malparty]

Issue

When reading the definition of the 2 variables:

• namespace should be used rarely
• environment should be used in every resource for tagging and generating names

However, the code implementation reveals that we use namespace everywhere for tagging resources.

For this reason, we must use a namespace that includes the environment name... and an environment that includes the namespace (which reduces the flexibility to use this var).

Expected

Given the application my-blog:

• namespace should be my-blog-web
• environment should be staging (or prod)
• the resources should be tagged with a local "${namespace}-${environment}-some-name"

Steps to reproduce

1. Create or open any infra repo that use this template 😇