jvb: expose public IP in autoscaler sidecar config (#1679)

jvb/rootfs/defaults/autoscaler-sidecar.config

@@ -15,4 +15,4 @@ export ASAP_SIGNING_KEY_FILE="{{ .Env.AUTOSCALER_SIDECAR_KEY_FILE }}"
 export ASAP_JWT_KID="{{ .Env.AUTOSCALER_SIDECAR_KEY_ID }}"
 export INSTANCE_TYPE="JVB"
 export INSTANCE_ID="{{ .Env.AUTOSCALER_SIDECAR_INSTANCE_ID }}"
-export INSTANCE_METADATA='{"environment":"{{ .Env.XMPP_ENV_NAME }}","region":"{{ .Env.AUTOSCALER_SIDECAR_REGION }}","group":"{{ .Env.AUTOSCALER_SIDECAR_GROUP_NAME }}","name":"{{ .Env.JVB_INSTANCE_ID }}","version":"{{ .Env.JVB_VERSION }}","privateIp":"{{ .Env.LOCAL_ADDRESS }}","hostId":"{{ .Env.AUTOSCALER_SIDECAR_HOST_ID }}"}'
+export INSTANCE_METADATA='{"environment":"{{ .Env.XMPP_ENV_NAME }}","region":"{{ .Env.AUTOSCALER_SIDECAR_REGION }}","group":"{{ .Env.AUTOSCALER_SIDECAR_GROUP_NAME }}","name":"{{ .Env.JVB_INSTANCE_ID }}","version":"{{ .Env.JVB_VERSION }}","privateIp":"{{ .Env.LOCAL_ADDRESS }}","publicIp":"{{ .Env.JVB_ADVERTISE_IPS }}","hostId":"{{ .Env.AUTOSCALER_SIDECAR_HOST_ID }}"}'