Allow users to enable/disable variable logging on builds or deployments

Problem Definition

Some users have of lots global variables on their setup, so their build/deployment logs are filled with them. This has some bad consequences:

1. Their logs become very big since every log will have all the variables
2. It is difficult to browse results since they need to navigate through the variable content every time

Suggested Solution

1. Create a mechanism allowing the user to decide whether the variable content will be logged or not on build/deployment logs