Description of problem:
rhui-manager fails to run on RHEL 7.6 Beta 1 after installing and executing rhui-installer:

[root@rhua ~]# rhui-manager 
Traceback (most recent call last):
  File "/bin/rhui-manager", line 9, in <module>
    load_entry_point('rhui-tools==3.0.4', 'console_scripts', 'rhui-manager')()
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 378, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 2566, in load_entry_point
    return ep.load()
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 2260, in load
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])
  File "/usr/lib/python2.7/site-packages/rhui/tools/launcher.py", line 33, in <module>
    from rhui.tools.shell import RhuiShell
  File "/usr/lib/python2.7/site-packages/rhui/tools/shell.py", line 24, in <module>
    from rhui.tools.screens import (
  File "/usr/lib/python2.7/site-packages/rhui/tools/screens/home.py", line 15, in <module>
    from rhui.tools.screens import (
  File "/usr/lib/python2.7/site-packages/rhui/tools/screens/cds.py", line 2, in <module>
    from rhui.tools.screens.instances import InstanceScreen
  File "/usr/lib/python2.7/site-packages/rhui/tools/screens/instances.py", line 12, in <module>
    from fabric.api import sudo, local, put, settings, get, hide, run
  File "/usr/lib/python2.7/site-packages/fabric/api.py", line 11, in <module>
    from fabric.decorators import (hosts, roles, runs_once, with_settings, task,
  File "/usr/lib/python2.7/site-packages/fabric/decorators.py", line 9, in <module>
    from Crypto import Random
ImportError: No module named Crypto

The thing is, fabric (from RHUI 3) requires python-paramiko >= 1.10.0, and python-paramiko in RHUI 3, version 1.15.1-1.el7ui, requires python-crypto >= 2.1. So, previously, fabric-1.8.1-1.el7ui + python-paramiko-1.15.1-1.el7ui + python-crypto-2.6.1-2.el7ui were installed and everything worked. Now, python-paramiko-2.1.1-5.el7 from Beta 1 wins, but it doesn't require python-crypto, so this package doesn't get installed and fabric is unhappy; meaning, rhui-manager crashes.

fabric must be rebuilt with a direct dependency on python-crypto. And this must be done before 7.6 is released.