Upgrade to postgres 10.6

- use awx-python in shebang in dev env
  - scl enable where needed for rhel7 & container installs
  - use scram-sha-256 pg user hashing by default
  - ensure psycopg2 is using the correct PG_CONFIG at build time for the right libpq version

tools/docker-compose.yml

@@ -39,10 +39,16 @@ services:
   #   build:
   #     context: ./docker-compose
   #     dockerfile: Dockerfile-logstash
+
   # Postgres Database Container
   postgres:
-    image: postgres:10.7
+    image: centos/postgresql-10-centos7
     container_name: tools_postgres_1
+    environment:
+      POSTGRESQL_USER: awx
+      POSTGRESQL_PASSWORD: awxpass
+      POSTGRESQL_DATABASE: awx
+      POSTGRESQL_ADMIN_PASSWORD: postgrespass
     ports:
         - "5432:5432"
   memcached: