fix atc/exec/timeout_step_test.go
fix atc/exec/timeout_step_test.go

Co-authored-by: Sameer Vohra <331d3c3021287f48dfcf7707b8699b9bcecefef1@pivotal.io>
Signed-off-by: Krishna Mannem <70f8bf4e42dd699c2822d738a7ab22d45b22b08a@pivotal.io>
Signed-off-by: Sameer Vohra <9dd3a30774efbd15e2401a4c8ee8d5219d46192f@gmail.com>

concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse