Pete Richards e45a686c5a [Telemetry] Combine subscriptions for points
The telemetry API detects when a subscription has already been made for a
given domain object and does not subscribe for that object a second time.
Removes a concern from those developing telemetry providers.

Also ensures that telemetry providers ALWAYS get request options, even if
no request options were provided.

Adds basic tests for the Telemetry API to validate this behavior.

Fixes https://github.com/nasa/openmct/issues/1594
2017-07-21 16:38:47 -07:00
..
2017-05-22 14:48:12 -07:00
2016-10-12 15:21:57 -07:00