219671: fix variable typo for test.core target
219671: fix variable typo for test.core target

Former-commit-id: f6a29fe0a2f8726fe5e4baa4169250366f09f794
bfg-repo-cleaner-demos/eclipselink.runtime-bfg-strip-big-blobs,bfg-repo-cleaner-demos/eclipselink.runtime-bfg-strip-big-blobs,bfg-repo-cleaner-demos/eclipselink.runtime-bfg-strip-big-blobs