Modifies POL deployment to use mysql database

Adds script to automatically create database if not existant.
Adds generation of db env var to install script.

Change-Id: I334ffe2a2f9c2570cf94454948e23f1ce4b5aee7
Signed-off-by: Benjamin Diaz <bdiaz@whitestack.com>
diff --git a/installers/docker/docker-compose.yaml b/installers/docker/docker-compose.yaml
index 3a879ad..b1f0cc8 100644
--- a/installers/docker/docker-compose.yaml
+++ b/installers/docker/docker-compose.yaml
@@ -148,9 +148,10 @@
     volumes:
       - pol_db:/app/database
     environment:
-      OSMPOL_SQL_DATABASE_URI: sqlite:///app/database/policy_module.db
       OSMPOL_MESSAGE_HOST: kafka
       OSMPOL_MESSAGE_PORT: 9092
+    env_file:
+      - ./pol.env
     #depends_on:
     #  - kafka
     #  - mon