feat: added AS-Prepends

Author: Madhavan Pillai

dl.env.properties

@@ -1,7 +1,7 @@
 export DL_SERVICES_AUTH_TYPE=iam
 export DL_SERVICES_APIKEY="<IAM-API-KEY>"
 export DL_SERVICES_LOCATION_NAME=dal09
-export DL_SERVICES_LOCATION_LONG_NAME="Dallas 09"
+export DL_SERVICES_LOCATION_LONG_NAME='Dallas 09'
 export DL_SERVICES_SERVICE_URL=https://directlink.test.cloud.ibm.com/v1
 export DL_SERVICES_IAM_URL=https://iam.test.cloud.ibm.com/identity/token
 export DL_SERVICES_GW_NAME=SDK-PY-DL-gateway