Add base historian error handling when device point data has invalid string content

[schandrika]

User posted html string in a point to device topic instead of to record topic. This cause base_historian to error. The user was testing this in older volttron(7.0.1?)
Test and make sure historian handles this correctly in the latest volttron version.

[schandrika]

What should be expected behavior. Should we skip that single point and still record everything else for that timestep and record error? Should status of historian show bad? @rlutes @shwethanidd @craig8 - thoughts?

[schandrika]

I am not able to reproduce this error in develop, releases/8.2, releases/8.1.

[craig8]

I would say that the user should update to 8.2.

[schandrika]

@rlutes could you comment. Could the users update to 8.2?