Remove some exception generation from http helper.
Remove some exception generation from http helper.

henrysher/imagefactory,LalatenduMohanty/imagefactory,LalatenduMohanty/imagefactory,henrysher/imagefactory,redhat-imaging/imagefactory,redhat-imaging/imagefactory,jmcabandara/imagefactory,jmcabandara/imagefactory