Modifying code to point to AAIService Properties

Adding dblib.properties (mysql credential properties to the sdnctl db),
modifying setenv.sh (used to define property values to mysql
- such as authenticating against the MySQL DB's) and adding the
APPC_CONFIG_DIR env variable as part of the Dockerfile.

Patch: Reverted Unintentional changes to the docker-compose template.
Patch: Changed some formatting as per Marcus's suggestions

Change-Id: I7cf9d90405bb4d552779cd0cd8a4f01525bdd823
Signed-off-by: Hector Anapan <ha076r@att.com>
Issue: [APPC-129]