speed up slow context card selenium specs
speed up slow context card selenium specs

Change-Id: I7787a51e1f32ae7776a5220b7cc31a164ce49a1c
Reviewed-on: https://gerrit.instructure.com/146425
Tested-by: Jenkins
Reviewed-by: Simon Williams <088e16a1019277b15d58faf0541e11910eb756f6@instructure.com>
Reviewed-by: Jonathan Featherstone <c99460343437e667b0585ea68fd7caf7bd0a02ab@instructure.com>
QA-Review: Jeremy Putnam <b030d6d6f199f844ec424882be473c2ab9adc93b@instructure.com>
Product-Review: Cameron Matheson <1d572acbfa68c7c6e541c7b840d6b622e5c0dc91@instructure.com>

instructure/analytics,instructure/analytics,instructure/analytics