Automatically start e2e testing

[sonyafenge]

Automatically start e2e testing:

export GRS_INSTANCE_PREFIX=[yourPreferName]-grs AUTORUN_E2E=true SIM_NUM=5 CLIENT_NUM=1 SERVER_NUM=1
export SERVER_ZONE=us-central1-a   SIM_ZONE=us-central1-a,us-west1-c,us-west2-a,us-west4-a,us-west3-c CLIENT_ZONE=us-central1-a
export SIM_REGIONS="Beijing,Shanghai,Wulan,Guizhou,Reserved1" SIM_RP_NUM=10 NODES_PER_RP=20000 SCHEDULER_REQUEST_MACHINE=25000 SCHEDULER_REQUEST_LIMIT=26000 SCHEDULER_NUM=10
export SERVICE_EXTRA_ARGS="--enable_metrics=false"
./hack/test-setup.sh

more information can be found from #95

[yb01]

any reason default to 16? and also, is 14 scheduler instances per machine too many ?

[sonyafenge]

we have default 2 sim and total 400k nodes, CHEDULER_REQUEST_MACHINE is 25000, so set to 16 scheduler to meet with total nodes.
for this setup, scheduler number per machine are dynamic assigned based on total scheduler_num and client machine numbers.
so far, out testing using 3 client machines and 40 schedulers are working well.

[yb01]

that seems too long for the wait.... on my local dev, a few seconds is more than enough to have simulator up to go.

[sonyafenge]

changed to 10 seconds

[yb01]

/lgtm