Add dbt integration tests, packages edition:

• dbt snowplow
• dbt utils
  Configured to run against snowflake or embucket.
  Structure:
• profiles.yml, is a file to set the connection to the dbt.
• repos.yml, contain git links to the dbt packages available to run integration tests
• repos_full_list.yml, contain all the packages with the integration tests
• requiremets.txt
• run_test.sh, bash file configured to run integration tests (setup dbt, env, load the package and run dbt commands)
• upload.py and Web_Analytics_sample_events.csv, files to create the embucket database
• packages folder, stores the logs in log/<package_name>/* directory. Not pushed into the repo, you will see it locally after the run.
• logs folder, stores the cloned package in /packages/<package_name> directory. Not pushed into the repo, you will see it locally after the run.