Add possibility to filter tagged resources

[martingaleano]

Note: Please remember to review the contribution guidelines if you have not yet done so.

What does this PR do?

Adding the possibility to add filters using tags in AWS integration solving https://github.com/DataDog/cloudformation-template/issues/87

Motivation

I've integrated more than 100 accounts and then I had to add filters manually to each integration, it was a little tedious.

Testing Guidelines

I replace the old stack with the new one and these were the outcomes: 1- AWS account integration created successfully 2- IAM role created successfully 3- AWS Lambda (Custom Resource) created successfully 4- Datadog filter tags created succesfully for each resource I passed as input parameter

Additional Notes