Re-write RTP17b tests

[maratal]

Tests

skipped__test__082__Presence__private_and_internal_PresenceMap_containing_only_members_that_match_the_current_connectionId__events_applied_to_presence_map__should_be_applied_to_ENTER__PRESENT_or_UPDATE_events_with_a_connectionId_that_matches_the_current_client_s_connectionId

and

skipped__test__083__Presence__private_and_internal_PresenceMap_containing_only_members_that_match_the_current_connectionId__events_applied_to_presence_map__should_be_applied_to_any_LEAVE_event_with_a_connectionId_that_matches_the_current_client_s_connectionId_and_is_not_a_synthesized

are no longer test current specs and should be re-written.

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