Docker registry sync on Red Hat Satellite 6 fails with error "A connection error occurred PLP0000: A connection error occurred"

Issue

• Docker registry sync on Red Hat Satellite 6 fails with error "A connection error occurred PLP0000: A connection error occurred"

# hammer -dv repository synchronize --product Containers --name pure-elk --organization Org
[ INFO 2016-01-28 11:35:24 Init] Initialization of Hammer CLI (0.1.4.13) has started...
[...]
        ],
        "output" => "A connection error occurred",
        "errors" => [
            [0] "PLP0000: A connection error occurred"
        ]
[...]
[...........................................................................................................................] [100%]
A connection error occurred
PLP0000: A connection error occurred