Invert IsUsingDefaultBootImageLocation to IsUsingApexBootImageLocation.

Some tests are picking up the jit-zygote path, which is not intended.

Invert the flag so that if in doubt, we don't execute the experiment path.

(cherry picked from commit 3db3d37dcd3ca8e232a260ce71ac540f33fcf584)

Bug: 119800099
Test: boot device
Change-Id: I95fb99fc85e97cc5d403ac5c387e6369d896497f
Merged-In: Ief3ff353cc25fa81157a75d917814982f3836ed0