Show additional context on Jenkins job diffs. (#827)
Show additional context on Jenkins job diffs. (#827)

* Allow configuration of diff context lines for Jenkins jobs

When trying to debug the differences between an old and new
job, a single line diff may not give enough context as to
what actually changed.  Since there is no exactly correct number to
use here, we make it configurable by the caller.

Signed-off-by: Chris Lalancette <281cd07d7578d97c83271fbbf2faddb83ab3791c@openrobotics.org>
ros-infrastructure/ros_buildfarm,ros-infrastructure/ros_buildfarm,ros-infrastructure/ros_buildfarm