Build #1654 in Mach 5 fails on Mac and Linux with a path related problem. Mac and Linux paths in Mach 5 are extremely long.

The error looks like:

## Starting installer
Copying images for installer
Bundles.gmk:286: *** open: /scratch/mesos/slaves/1f633437-b48c-421a-ad10-cc6cf75bf564-S17/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/050fdc71-59f6-436d-bf47-1ee79419e23d/runs/a315e148-0ac6-4640-b0e4-04c60fcb843d/workspace/build/macosx-x64/support/bundles/_BUILD_TEST_BUNDLE__scratch_mesos_slaves_1f633437-b48c-421a-ad10-cc6cf75bf564-S17_frameworks_1735e8a2-a1db-478c-8104-60c8b0af87dd-0196_executors_050fdc71-59f6-436d-bf47-1ee79419e23d_runs_a315e148-0ac6-4640-b0e4-04c60fcb843d_workspace_build_macosx-x64_images_test_files: File name too long. Stop.
make/Main.gmk:490: recipe for target 'test-bundles' failed
make[2]: *** [test-bundles] Error 2
make[2]: *** Waiting for unfinished jobs....