Fix failure/success for backend loop
Fix failure/success for backend loop

We now set failure inside the loop, and success at the end

[#120715555]

Signed-off-by: Gabriel Ramirez <b6b1c3a96b86f6839fb87789d791fccb84e5dc25@gmail.com>

cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,orange-cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,orange-cloudfoundry/buildpacks-ci,orange-cloudfoundry/buildpacks-ci