As a user I tried to create a new consumer with my client:

# pulp-client  consumer create --id=test 
warning: this client is not registered; please register to continue
Error: No valid credentials; Please use `--username` and `--password`

I saw the Warning about 'this client is not registered; please register to continue' and went looking for a 'register' command so I could continue... but no where in the client do we say anything about registering a client, just creation.

we should change that error message to:

# pulp-client consumer create --id=test 
Error: No valid credentials; Please use `--username` and `--password`:

  pulp-client --username=**** --password=****

warning: the pulp server doesn't know about this client; please create a consumer to continue

my main issue is we should get rid of any error messages referring to 'registration' since that doesn't mean anything to the user.