Switch internal address to new pillar

_param:docker_default_gateway

Change-Id: I83fff84700d9524a451f516ce60b01d406f64f82
diff --git a/trymcp-day01-image/files/opt/add_keycloak_service_user.sh b/trymcp-day01-image/files/opt/add_keycloak_service_user.sh
index a38b236..b5eb0a6 100644
--- a/trymcp-day01-image/files/opt/add_keycloak_service_user.sh
+++ b/trymcp-day01-image/files/opt/add_keycloak_service_user.sh
@@ -5,7 +5,7 @@
 realm_usermail='drivetrain-eng@mirantis.com'
 echo "[ Getting Keycloak endpoint ]"
 keycloak_port=$(salt-call pillar.get --out=txt _param:haproxy_keycloak_exposed_port | awk '{print $2}')
-internal_address=$(salt-call pillar.get --out=txt _param:single_address | awk '{print $2}')
+internal_address=$(salt-call pillar.get --out=txt _param:docker_default_gateway | awk '{print $2}')
 keycloak_url="http://${internal_address}:${keycloak_port}"
 keycloak_admin_password=$(salt-call pillar.get --out=txt _param:keycloak_admin_password | awk '{print $2}')
 keycloak_user_password=$(salt-call pillar.get --out=txt _param:keycloak_user_password | awk '{print $2}')