cmd/admin: add required steps to configure project
cmd/admin: add required steps to configure project

- Every time I switch from prod to test or vice-versa (using -p or not)
  I need to execute these two lines before calling the script. That's
  silly, it should just be part of the script.
- I'm not sure why this was left off, maybe there's some other, easier
  way, but it won't authenticate me otherwise.

Tested by re-deploying both keyservers (test and prod)

Change-Id: I1dad7d67b7fd43daf8d91bc57ecdd7ba0f15d2a3
Reviewed-on: https://upspin-review.googlesource.com/2691
Reviewed-by: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@google.com>

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