Installing 'katello-ca-consumer-latest.noarch.rpm' on client registered with Red Hat Satellite 6 fails with 'Unable to find Subscription Manager module. Error: No module named json'

Issue

• Installing 'katello-ca-consumer-latest.noarch.rpm' on client fails with below error:

# rpm -Uvh http://satellite.example.com/pub/katello-ca-consumer-latest.noarch.rpm
Retrieving http://satellite.example.com/pub/katello-ca-consumer-latest.noarch.rpm
Preparing...                ########################################### [100%]
   1:katello-ca-consumer-kwa########################################### [100%]
Unable to find Subscription Manager module.
Error: No module named json