Make service_checks easier to run independently of kolla-ansible
Make service_checks easier to run independently of kolla-ansible

Set a default for CONFIG_DIR in service_checks to more easily allow
consumers not using the kolla-ansible tool to run the prechecks.

Change-Id: I78bc5dd6f37e6a60ecc6a86d43e56b05803a4fd5
Closes-Bug: #1629893

dardelean/kolla-ansible,dardelean/kolla-ansible,dardelean/kolla-ansible