Agent device's SAMPLE's are missing UNITS type

[robot-ranger]

The Agent's own device SAMPLE dataitems are missing UNITS in streams documents.

The UNITS are specified in the Devices document (ie - probe), but missing in current and sample streams.

These are dataitems such as AssetUpdateRate and ObservationUpdateRate for each adapter that the agent is connected to.

This was discovered with https://validator.tams.ai

Also, https://model.mtconnect.org/#Structure___19_0_3_68e0225_1605104928558_860757_1123 shows multiplicity of "1" I assume that implies it is required.

[wsobel]

I'll fix it in the next release.

[robot-ranger]

I'll fix it in the next release.

not very critical; prioritize it as you will.

[robot-ranger]

after discussion, this appears to be a model issue.

sysML does list units under each sample observation, possibly erroneously.

UNITS are a static definition; they ARE in model definition (ex probe, Devices response docs), but shouldnt be in the observations (ex current, sample, streams response docs).

The TYPE of a SAMPLE observation implies the units

TLDR; possibly not a cppagent issue. Ill leave this issue open for now until resolution, but feel free to close anytime.