Hammer CLI

Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1541178

- Description of problem:
when trying to get the output of hammer commands in a tabular format, the following error message is seen :-

1. hammer --output table sync-plan info --id 3
   ---|---------------------------|---------------------|----------|---------|--------------------------------------------|---------------------|--------------------
   ID | NAME | START DATE | INTERVAL | ENABLED | DESCRIPTION | CREATED AT | UPDATED AT
   ---|---------------------------|---------------------|----------|---------|--------------------------------------------|---------------------|--------------------
   3 | custom 3rd party reposync | 2017/12/11 19:15:00 | daily | no | some custom 3rd party repositories to sync | 2017/11/15 14:15:58 | 2017/12/08 11:45:46
   ---|---------------------------|---------------------|----------|---------|--------------------------------------------|---------------------|--------------------

Error: undefined method `meta' for #<Array:0x00000002591cb0>

This message does not appear when using any other output format, other than table.

- Version-Release number of selected component (if applicable):
Katello 3.4.0

- How reproducible:
Always

- Steps to Reproduce:
1. Execute any hammer command with --output table option.

1. hammer --output table sync-plan info --id 3

- Actual results:
Error message "Error: undefined method `meta' for #<Array:0x00000002591cb0>" is seen.

- Expected results:
No error message should be seen

Additional info: