Fix image value comparison in check_image test
Fix image value comparison in check_image test

For integrated registry cases, drop the tag.

tmckayus/oshinko-s2i,tmckayus/oshinko-s2i,rimolive/oshinko-s2i,rimolive/oshinko-s2i,tmckayus/oshinko-s2i,rimolive/oshinko-s2i