spec: refactor context modules selenium specs for draft state

refs #CNVS-15563

Change-Id: Ic68e0374f820b4e37814f2e585d1d046993489ef
Reviewed-on: https://gerrit.instructure.com/43329
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Jeremy Stanley <jeremy@instructure.com>
Reviewed-by: Jeremy Stanley <jeremy@instructure.com>
QA-Review: James Williams  <jamesw@instructure.com>