Using the parallel_tests gem allows us to parallelize more
and a bit simpler. Removes headless stuff now that we don't
use it anymore, comments out video recording code since it
doesn't work, removes all knapsack code.
flag = none
Test Plan:
Jenkins rspec and selenium builds pass
rspec and selenium builds copy results to html publisher
rspec and selenium have nodes split into processes
Change-Id: Ibd00eba77f8193be5eadd41aef1e0617c9ae470c
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/227677
Reviewed-by: Jacob Powell <spowell@instructure.com>
Reviewed-by: Ryan Taylor <rtaylor@instructure.com>
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
QA-Review: James Butters <jbutters@instructure.com>
Product-Review: James Butters <jbutters@instructure.com>