spec: fix fragile groups_teacher spec
spec: fix fragile groups_teacher spec

push to chrome topic
add explicit waits for detail elements

Change-Id: I1ccd4f76d1cfcfd3ca868f3fe60036f56b74d877
Reviewed-on: https://gerrit.instructure.com/114313
Tested-by: Jenkins
Reviewed-by: Leo Abner <6bfbfd5df67beb2a7b2543f9a05c72d17520f3f5@instructure.com>
Product-Review: Robert Lamb <bf934bf7cdbebe5899399a138c0cb75c4d783999@instructure.com>
QA-Review: Robert Lamb <bf934bf7cdbebe5899399a138c0cb75c4d783999@instructure.com>

instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,venturehive/canvas-lms