feat: Add support for empty mounts in provisioning script

[DerekMaggio]

Overview

Add support for empty pipette mounts.

Test Plan

• Run configuration that has only a left pipette. Make sure that right pipette eeprom size is 0. Make sure left pipette eeprom size is not.

Changelog

• Add logic to parse empty mount env var
• Add tests

Review requests

None

Risk assessment

Low

[codecov]

Codecov Report

Merging #12961 (42e6419) into edge (50efb8a) will increase coverage by 0.00%.
The diff coverage is 93.75%.

@@           Coverage Diff           @@
##             edge   #12961   +/-   ##
=======================================
  Coverage   72.91%   72.91%           
=======================================
  Files        2349     2349           
  Lines       64380    64392   +12     
  Branches     7167     7167           
=======================================
+ Hits        46943    46954   +11     
- Misses      15761    15762    +1     
  Partials     1676     1676           

Flag	Coverage Δ
hardware	59.13% <93.75%> (+0.05%)	⬆️
notify-server	89.13% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ns_hardware/scripts/emulation_pipette_provision.py	93.47% <93.75%> (-0.64%)	⬇️

[Laura-Danielle]

Couldn't you just keep this a data class with defaults?

[Laura-Danielle]

or keep it a dataclass and use a build classmethod

[DerekMaggio]

Stop making so much sense. I have no idea why I did it that way. I will go back and fix it.

If I remember the reason I did it that way, and the reason makes sense, I will drop a comment.

[DerekMaggio]

I remembered my reasoning for doing it that way.
My reasoning was not good.

Here is the fix
262d21e

[fsinapi]

LGTM!