Option for dev env to enable ssl for postgres (#15151)

PG_TLS=true make docker-compose

This will add some extra startup commands
for the postgres container to generate a key and
cert to use for postgres connections.
It will also mount in pgssl.conf which has ssl configuration.

This can be useful for debugging issues that only surface
when using ssl postgres connections.

tools/docker-compose/ansible/roles/sources/defaults/main.yml

@@ -4,6 +4,7 @@ awx_image: 'ghcr.io/ansible/awx_devel'
 pg_port: 5432
 pg_username: 'awx'
 pg_database: 'awx'
+pg_tls: false
 control_plane_node_count: 1
 minikube_container_group: false
 receptor_socket_file: /var/run/awx-receptor/receptor.sock