Mention password to be used for example DB

Author: NikolayS

terraform.tfvars

@@ -17,7 +17,7 @@ source_postgres_version = "13"
 source_postgres_host = "ec2-3-215-57-87.compute-1.amazonaws.com"
 source_postgres_port = "5432"
 source_postgres_dbname = "d3dljqkrnopdvg" # this is an existing DB (Heroku example DB)
-source_postgres_username = "postgres"
+source_postgres_username = "bfxuriuhcfpftt" # in secret.tfvars, use:   source_postgres_password = "dfe01cbd809a71efbaecafec5311a36b439460ace161627e5973e278dfe960b7" 
 
 dle_debug_mode = "true"
 dle_retrieval_refresh_timetable = "0 0 * * 0"