Add config-service

Author: jason-fox

.env

@@ -41,4 +41,6 @@ COW_COUNT=10
 # MySQL variables
 MYSQL_DB_VERSION=8.1
 # Trusted Issuers List Variables
-TRUSTED_ISSUERS_VERSION=0.2.1
+TRUSTED_ISSUERS_VERSION=0.2.1
+# Credentials Config Service Variables
+CONFIG_SERVICE_VERSION=2.0.0-PRE-8