+++ This bug was initially created as a clone of Bug #1425606 +++

Description of problem:

When running bootstrap, it fails to register a system that has an invalid hostname, (such as one with an underscore), or hostname that are short (hostname -f) doesn't return an FQDN, 


Version-Release number of selected component (if applicable):
katello-client-bootstrap-1.2.2

How reproducible:
100%

Steps to Reproduce:
1. Create a system with a 

short name (where hostname -f or "ython -c "import socket;print socket.getfqdn()"" returns a shortname

or an invalid name. (Such as a name with an underscore), such as foo_bar.example.com


2. Register with bootstrap. 
3.

Actual results:
bootstrap fails with an error similar to the following:

    [RUNNING], [2017-02-21 14:13:01], [Calling Foreman API to create a host entry associated with the group, domain, org & location]
    url: https://<capsule-fqdn>:8443/api/v2/hosts/
    method: POST
    data: {
      "host": {
        "managed": "true",
        "name": "<hostname>",
        "hostgroup_id": 22,
        "organization_id": 1,
        "mac": "00:50:56:90:11:D2",
        "architecture_id": 1,
        "location_id": 3,
        "domain_id": 6
      }
    }
    Error: The following error occured while talking to the API:
    url: https://<capsule-fqdn>:8443/api/v2/hosts/
    code: 422
    data: {
      "host": {
        "managed": "true",
        "name": "<hostname>",
        "hostgroup_id": 22,
        "organization_id": 1,
        "mac": "00:50:56:90:11:D2",
        "architecture_id": 1,
        "location_id": 3,
        "domain_id": 6
      }
    }
    error: {
      "error": {
        "errors": {
          "interfaces.name": [
            "is invalid"
          ],
          "name": [
            "is invalid"
          ]
        },
        "id": null,
        "full_messages": [
          "Name is invalid",
          "Name is invalid"
        ]
      }
    }

Expected results:

bootstrap successfully registers the system. 

Additional info:

--- Additional comment from rjerrido@redhat.com on 20170221T22:23:22

Also RFC 952 or 1123 covers hostname validation and Foreman appears to respect this (see lib/net/validations.rb). 

As we generally cannot ask the customer to change their hostnames (many have short names for 3rd party apps), it might be advisable to allow the customer to set an arbitrary hostname in bootstrap.py (for puppet and subscription-manager) that differs from what the system reports.

--- Additional comment from rjerrido@redhat.com on 20170223T19:29:43

Fixed in commit https://github.com/Katello/katello-client-bootstrap/commit/49ec1ae44a7463f5f615ad6d59fccd21d9da6bda