Change V2 image tests to actually run V2 image code

The current tests for image do not run v2 image code, changing
that portion also made it's only test fail.
I opted to change the image delete code and not the test, since
passing the object ID is more in line with the rest of the
project code.

Change-Id: I62e13c063a5d68279dbbf31e59266db6285d73bf
Merge "Change V2 image tests to actually run V2 image code"