refs #5028 - organizations aren't a special case anymore
Fixes #5569 - support --name for repository-set available-repositories
fixes #5192 - rename system-group to host-collection

This commit contains a small change to rename the system group
command to host collection.

This commit contains a small change to rename the system group
command to host collections
Merge pull request #157 from iNecas/repository-set-available

Fixes #5569 - support --name for repository-set available-repositories
update README to also pull down hammer-cli-foreman-tasks
Merge pull request #158 from bbuckingham/issue-5192

fixes #5192 - rename system-group to host-collection
fixes #5600 - fix host-collection copy command

The command was missing the arguments/parameters; therefore,
user couldn't actually copy a host collection.
fixes #5602 - host-collections: add command to list content-hosts

Added a list command to show the list of content-hosts in a
host-collection. E.g.

hammer> host-collection content-hosts --id 1
---|--------------------------------------|-----------------
ID | UUID                                 | NAME
---|--------------------------------------|-----------------
9  | 054925b5-2046-494d-afe8-8b56dc5a5596 | sat6client.devel
---|--------------------------------------|-----------------
Merge pull request #160 from dustint-rh/update_readme_with_tasks

update README to also pull down hammer-cli-foreman-tasks
Merge pull request #161 from bbuckingham/issue-5600

fixes #5600 - fix host-collection copy command
Merge pull request #155 from komidore64/rmi5028

refs #5028 - organizations aren't a special case anymore
fixes #5601, #5603 - host-collections: add support for update and add/remove-content-host

This commits add support for the following commands:

host-collection update
host-collection add-content-host
host-collection remove-content-host
Merge pull request #162 from bbuckingham/issue-5602

fixes #5602 - host-collections: add command to list content-hosts
Merge pull request #163 from bbuckingham/issue-5601

fixes #5601, #5603 - host-collections: add support for update & add/remove-content-host
Fixes #5613 - Content Hosts outputs uuid bz1084722

Content hosts will now ouput uuid instead of id to align the input for
the commands to the output of the commands.
Merge pull request #166 from dustint-rh/bz1084722_system_id_output_uuid

Fixes #5613 - Content Hosts outputs uuid bz1084722
Fixes #5729 - content-host lookup by uuid

In the info, create, delete commands, non-id params can be used to
search for the resource. Currently the resource can not be found because
the command looks up the resource by its internal id instead of using the
uuid. This fix allows the commands to look up the resource by uuid.