Remove duplicate check of self.container_user
Remove duplicate check of self.container_user

Clean up some duplicate code that is already setup in the init()
function.

Change-Id: I8e1b448a1eba483f90cbf1c43cb45d18bf0db91b
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

openstack/openstack-ansible-plugins,openstack/openstack-ansible-plugins