subscription-manager register fails with The 'python-dateutil' distribution was not found and is required by subscription-manager

Issue

• While trying to register a system it fails with below traceback error:

  Traceback (most recent call last):
  File "/sbin/subscription-manager", line 5, in <module>
  from pkg_resources import load_entry_point
  File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3126, in <module>
  File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3110, in _call_aside
  File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 3139, in _initialize_master_working_set
  File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 581, in _build_master
  File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 898, in require
  File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 784, in resolve
  pkg_resources.DistributionNotFound: The 'python-dateutil' distribution was not found and is required by subscription-manager