use same vars for db setup and liquibase

Author: vivid-cpreston

terraform/ecs.tf

@@ -179,11 +179,11 @@ resource "aws_ecs_task_definition" "wfprev-liquibase" {
         },
         {
           name = "LIQUIBASE_COMMAND_USERNAME"
-          value = var.LIQUIBASE_COMMAND_USERNAME
+          value = var.WFPREV_USERNAME
         },
         {
           name = "LIQUIBASE_COMMAND_PASSWORD"
-          value = var.LIQUIBASE_COMMAND_PASSWORD
+          value = var.DB_PASS
         },
         {
           name = "APP_WF1_PREV_LIQUIBASE_COMMAND_PASSWORD"
@@ -260,4 +260,4 @@ resource "aws_ecs_service" "wfprev_server" {
     container_name   = var.server_container_name
     container_port   = var.WFPREV_API_PORT
   }
-}
+}