yardstick env influxdb/grafana cmd support centos
JIRA: YARDSTICK-714
Currently yardstick env influxdb/grafana command do not support centos.
Because we use the gateway ip to get the service of influxdb and grafana.
But in centos, we can not access influxdb/grafana service via gateway ip.
In this patch, I use docker inspect to get the ip of influxdb and grafana.
So these command can support centos.
Change-Id: Ie4abcb8048b92d61bc62777dfc362bb29f354b2b
Signed-off-by: chenjiankun <chenjiankun1@huawei.com>