Adding cfg.json.example

Signed-off-by: Vikram Hosakote <[email protected]>

Author: vhosakot

test/systemtests/How-to-Run.md

@@ -11,7 +11,7 @@ Swarm -- Non-ACI
 ```
 A guide to running netplugin systemtests on Vagrant and Baremetal platforms:
 
-Customize the JSON file netplugin/systemtests/cfg.json according to your environment. A typical file for vagrant with swarm looks like:
+Customize the example JSON file `netplugin/systemtests/cfg.json.example` according to your environment and rename it to `netplugin/systemtests/cfg.json`. A typical file for vagrant with swarm looks like:
 ```
 [
     {

test/systemtests/cfg.json.example

@@ -0,0 +1 @@
+{"install_mode": "legacy", "binpath": "/opt/gopath/bin", "iterations": 3, "encap": "vlan", "keyFile": "/home/admin/.ssh/id_rsa", "gateway": "10.1.1.254", "subnet": "10.1.1.0/24", "network": "TestNet", "contiv_cluster_store": "etcd://localhost:2379", "platform": "vagrant", "mgmtInterface": "eth1", "dataInterfaces": "eth2,eth3", "vxlan": "1-10000", "product": "netplugin", "swarm_variable": "", "vlan": "1120-1150", "aci_mode": "off", "scheduler": "docker", "enableDNS": false, "tenant": "TestTenant", "short": false, "hostips": "192.168.2.10,192.168.2.11,192.168.2.12", "hostusernames": "admin,admin,admin", "containers": 3, "contiv_l3": ""}