Error on cluster creation (trial period)

Summary

Now gitlab-ce#42014 is closed and OK. I still cannot create a cluster. It may be due to the fact I'm in trial period on google cloud engine.

What is the current bug behavior?

Error mesage: We could not verify that one of your projects on GCP has billing enabled. Please try again.

What is the expected correct behavior?

Cluster created

Relevant logs and/or screenshots

Screen_Shot_2018-01-15_at_6.55.41_PM