[DRAFT] Initialize on Cloud Gateways

Initialize on 1^st gateway

To initialize Swarm cluster on 1st Cloud gateway, refer to te following steps:

1. Run /opt/caringo/cloudgateway/bin/initgateway to initialize Swarm cluster on 1st gateway and to create an administrative domain e.g., adminDomain = hkLab1GatewayAdminDomain. 

2. Start Cloud gateway and ensure that the gateway service running on the system boot.

   systemctl start cloudgateway 
   systemctl enable cloudgateway 

Setup 2^nd or other gateways 

1. Repeat install cloud gateway. Steps 1 to 13, WebUI on other nodes, copy configure files from 1^st node before starting gateway services.

   scp root@172.16.33.17:/etc/caringo/cloudgateway/gateway.cfg /etc/caringo/cloudgateway/gateway.cfg  
   scp root@172.16.33.17:/etc/caringo/cloudgateway/idsys.json /etc/caringo/cloudgateway/idsys.json 
   scp root@172.16.33.17:/etc/caringo/cloudgateway/policy.json /etc/caringo/cloudgateway/policy.json 

2. Now, you can start gateway services via systemctl start cloudgateway command.