CLC-3852 Smoke test shouldn't burn down the server

https://jira.ets.berkeley.edu/jira/browse/CLC-3852

The first commit stops our ongoing ping-all-APIs-by-default madness.

The second commit keeps simple mistakes from triggering a full Hot Plate run.
@raydavis not a blocker but is there a reason for using `Integer(who, 10)` instead of `who.to_i`?