Hammer CLI

Cloned from : https://bugzilla.redhat.com/1387917

Description of problem:

- While trying to create a vmware compute resource without the "--url" flag, it fails with the below error.

Could not create the compute resource:
Error: Options --name, --url, --provider are required

See: 'hammer compute-resource create --help'

Version-Release number of selected component (if applicable):

- Red Hat Satellite v 6.2

How reproducible:

- Always

Steps to Reproduce:

1. Try to create a vmware compute resource without the --url flag.

2. Hammer fails with the error.

Actual results:

- Hammer fails with the error.

Could not create the compute resource:
  Error: Options --name, --url, --provider are required

  See: 'hammer compute-resource create --help'

Expected results:

- Compute resource should be created without any errors as the vmware provider only requires the server parameter instead of url.

Additional info:

- Using the same hostname as --url and --server will work.