Problem solved. Here is how i resolved it.
Installed the standard kernel, compiled and the iscsitarget module got compiled and installed properly. Then installed the plus kernel and rebooted inside it. Did a make install in the previous compiled version, redid a make, make install, and it worked fine.
Have no idea why the above would work, but it did and now centosplus kernel has the iscsitarget 0.17 version compiled and running properly.