Fix worker check issue

[tangle329]

Signed-off-by: Tang Le [email protected]

[k8s-reviewable]

This change is 

[coveralls]

Coverage remained the same at 44.249% when pulling 008c47c on tangle329:master into 95d6900 on kubernetes:master.

[aledbf]

@tangle329 why you change this? (the idea is to wait until the port 80 is available)

[tangle329]

@aledbf After reading the code, I find this piece of code is waiting for the workers to exit and then start the new nginx process. So to check the exit status of worker should be wait until port 80 is not available, otherwise the new worker can be not started, because the port 80 is used by old one. Am i right ?

[aledbf]

@tangle329 you are right.

[aledbf]

@tangle329 thanks!