Bug 1313697

Description of problem
======================

Host cards of some machines fail to report version of the operating system
properly.

Version-Release number of selected component
============================================

USM machine:
rhscon-ceph-0.0.6-10.el7.x86_64
rhscon-core-0.0.8-9.el7.x86_64
rhscon-ui-0.0.18-1.el7.noarch

USM MON machine:
rhscon-agent-0.0.3-3.el7.noarch

USM OSD machines:
rhscon-agent-0.0.3-3.el7.noarch

How reproducible
================

100 %

Steps to Reproduce
==================

1. Install USM according to the documentation
2. Accept all hosts
3. Go to Hosts page

Actual results
==============

On the Hosts page, cards of future OSD machines reports the following:

~~~
OS :  lsb_release: command
~~~

While cards of future MON machines reports:

~~~
OS :  RedHatEnterpriseServer 7.2
~~~

Expected results
================

No matter of a type of a machine, all cards should report the OS properly
like this:

~~~
OS :  RedHatEnterpriseServer 7.2
~~~

Additional info
===============

This is likely caused by the fact that lsb_release is not installed on
OSD machines:

~~~
[root@mbukatov-usm1-node1 ~]# # lsb_release
-bash: lsb_release: command not found
~~~

But it's available on MON machine:

~~~
[root@mbukatov-usm1-mon1 ~]# lsb_release 
LSB Version:	:core-4.1-amd64:core-4.1-noarch
[root@mbukatov-usm1-mon1 ~]#  rpm -qa 'rhscon*
~~~

Also note that on usm cluster I deployed in a previous week, 
redhat-lsb-core-4.1-27.el7.x86_64 package was installed on all machines.