Cleaned up formatting of the cli base file

Also modified the cli test to account for a change in formatting.
Ran tests to ensure everything still worked correctly.

[jcallaha@dhcp129-121 robottelo]$ nosetests tests/foreman/cli/test_activationkey.py
.SSSSSS........................................................................
Ran 79 tests in 1974.218s
IIRC, some team members have expressed a desire that `{N}` be used instead of `{}`.