3.11.6: Update logging for exam attempt status updates

Merge pull request #868 from edx/alangsto/update_logs

fix: Add log message for timed out attempt or re-attempt

Bug fix on ping interval value being milliseconds

Fix a bug where we are to pass to vendor javascript a value in milliseconds, instead of just seconds

Start of the exam would also use the same ping interval as during exams

[Fix]: MST-810 Add ping interval into exam start handler in worker as well to have consistent set of desktop app survival ping intervals
This change also bumps the version of the edx_proctoring library to 3.11.4
The release also includes a minor requirements library version upgrade.

Fix bug in StudentOnboardingStatusView for no sequence schedule for a sequence

fix: Fix bug in StudentOnboardingStatusView for no sequence schedule for a sequence

https://github.com/edx/edx-proctoring/blob/master/CHANGELOG.rst#3113---2021-05-27

3.11.2: fix: prevent config changes from adding nonexistent backend configs

JIRA:MST-824

3.11.1: Fix for onboarding status endpoint

Merge pull request #858 from edx/alangsto/fix_onboarding_panel_endpoint

fix: Verificient onboarding API requires obscured user id

Modify Learner Onboarding API to determine whether onboarding is past due in a course and display this status in the onboarding panel

https://github.com/edx/edx-proctoring/blob/master/CHANGELOG.rst#3110---2021-05-24

3.10.2: Use onboarding status API for onboarding info panel

Merge pull request #851 from edx/alangsto/learner_panel_with_onboardi…

3.10.1 Proctored Exams Settings Endpoint

https://github.com/edx/edx-proctoring/blob/master/CHANGELOG.rst#3101---2021-05-21

3.10.0: feat: allow configurability by backend of url from onboarding panel

Motivation is mostly to enable us to swap out these URLs by a
remote-config PR, not really the backend-specificity. But it might be
helpful in the future if we add more backends!

JIRA:MST-824