Detect when an IAM Role is given as a Profile Name

[blakeca00]

Trap and return msg to stdout indicating a only IAM Users have access keys

[blakeca00]

profile names must be known in advance and detected, vs. trapping any exception caused by submitting an IAM role profile name to keyup

[blakeca00]

temporary_profilenames module function added to iam_operations.py module so that the following comparision can be done to validate when a temporary profile name given to keyup:

1. call temporary_profilenames() to return list of all identities in local config represented by iam users
2. see if in the list returned
3. if YES, exit with INFO message