Fix 'NameError("name 'chassis' is not defined")' error in thermalctld log

[noaOrMlnx]

Description

Changed the chassis definition to be a part of the class do the chassis will be found in run() function

Motivation and Context

Without the change, an error appears in syslog.
ERR pmon#thermalctld: Caught exception while running thermal policy - NameError("name 'chassis' is not defined")

How Has This Been Tested?

N/A

Additional Information (Optional)

[liat-grozovik]

@noaOrMlnx can you explain what changed that we need this fix now?

[liat-grozovik]

Can you please also ask Kebo or Junchao to take a look at it?

[liat-grozovik]

You have a typo in the description
"Changed the chassis definition to be a part of the class do the chassis will be found in run() function" should be
"Changed the chassis definition to be a part of the class so the chassis will be found in run() function

[noaOrMlnx]

@liat-grozovik
didn't receive notification on this comment so I see that just now.

1. In this PR [thermalctld] Refactor to allow for greater unit test coverage; Add more unit tests sonic-net/sonic-platform-daemons#157 there was an intention to improve thermalctld but a mistake was done. hence, the above mentioned error appeared in syslog.

2. Junchao reviewed the public PR - [thermalctld] Fix 'NameError("name 'chassis' is not defined")' error in log sonic-net/sonic-platform-daemons#170

3. Fixed in public PR. thanks.

public PR was already merged.