Description of problem:
ISO Uploader Tool doesn't work.

Version-Release number of selected component (if applicable):
Engine Version: 4.3.0-0.2.el7
OS Version: RHEL - 7.6 - 4.el7
LIBVIRT Version: libvirt-4.5.0-10.el7_6.3
VDSM Version: vdsm-4.30.3-33.el7

How reproducible:
100%

Steps to Reproduce:
1. Try to run any of the commands of the ISO Uploader Tool. 
2.
3.

Actual results:
Traceback (most recent call last):
  File "/usr/bin/engine-iso-uploader", line 32, in <module>
    from .glfs_api import GlfsApi
ValueError: Attempted relative import in non-package


Expected results:
The command works as it should.

Additional info:
[root@compute-ge-6 bin]# engine-iso-uploader -h
Traceback (most recent call last):
  File "/usr/bin/engine-iso-uploader", line 32, in <module>
    from .glfs_api import GlfsApi
ValueError: Attempted relative import in non-package
[root@compute-ge-6 bin]# vi engine-iso-uploader 

It seems like there is a problem with the relative import of .glfs_api