Tests now grab starting and ending temps and store in data directory

[ryanhardig]

Description

This PR store new jsons in data dir for each test run including information on coldbox temps, dewpoint, humidity. Values are taken from the TessieCoolingApp so that we do not run into read conflicts on the coldbox.

Outputs to data directory :

• Start: tessie_start_temps.json
• End: tessie_end_values.json

JSON includes:

• source
• timestamp
• phase (start or end of test)
• temperatures[8]
• relative_humidity
• dew_point
• temperature_setpoints[8]

Checklist

Before submitting this PR, please ensure the following:

• I am using the correct branches/versions of all submodules.
• I have successfully launched the Simplified GUI.
• I have successfully run a test in the Simplified GUI.
• I have successfully run a test in the Expert GUI.

Related Issues

Works on issue #632

Changes Made

Added a cache to TessieCoolingApp, tracking relevant info to be passed at starts and ends of tests.
Added calls at the start and end of runsingletest to store our jsons per individual test.

Testing

Ran on RH0109 in coldobox and verified jsons produced accurate information.