[no ticket][risk=no] Puppeteer: Increase wait for notebook ready timeout (#4451)
[no ticket][risk=no] Puppeteer: Increase wait for notebook ready timeout (#4451)

* increase waitFor idle timeout 5 minutes

* fix enum casing

* [skip ci] rename kernelStatus function
all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench