[#73046884] spec that identifies error

- also added git-pivotal-integration gem
[#73046884] if connection fails contact is saved

- last_seen_at won't be updated
[#73046884] queue setting last_seent_at to backgr.

- in the background, if contact-ws connection fails,
  update fails. so that it is runned again.
Merge 73046884-create-attendeance-bug to master

[Completes #73046884]