Enable debug_tools with job.debug_options
Enable debug_tools with job.debug_options

The feature should be available to any repository that can
put `job.debug_options` in the payload without enabling it for
the entire environment.

jhass/travis-build,craigcitro/travis-build,akoeplinger/travis-build,JuliaCI/travis-build,JuliaCI/travis-build,jhass/travis-build,kevmoo/travis-build,andyli/travis-build,craigcitro/travis-build,kevmoo/travis-build,andyli/travis-build,akoeplinger/travis-build