Rename "user expiry-seconds" step

[dmikhalin]

Please replace every line in curly brackets { like this } with appropriate answers, and remove this line.

Problem to Solve

We have a step "user expiry-seconds" that should check if the user's password expiration field is set, but it is not clear from the step.

Proposed Solution

Rename this step to something more meaningful such as "user has password expiry". Then rename it in all clients and verify if they do the expected check (it seems that java-client doesn't).