add ethernet-switching filter type

[ProtonBruno]

Hi team,
This PR is related to issue #56
As discussed porting our Capirca PR here with associated unit tests.
It's basically adding ethernet-switching filter type for Juniper EX platform.
Thx

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (8754c32) 91.23% compared to head (070d31f) 91.23%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #318   +/-   ##
=======================================
  Coverage   91.23%   91.23%           
=======================================
  Files         102      102           
  Lines       22578    22591   +13     
  Branches     3385     3385           
=======================================
+ Hits        20598    20611   +13     
  Misses       1284     1284           
  Partials      696      696           

Flag	Coverage Δ
tests	91.19% <100.00%> (+<0.01%)	⬆️

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Impacted Files	Coverage Δ
aerleon/lib/aclgenerator.py	92.78% <100.00%> (ø)
aerleon/lib/juniper.py	86.87% <100.00%> (ø)
tests/regression/juniper/juniper_test.py	99.78% <100.00%> (+<0.01%)	⬆️

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[ankenyr]

This is looking good but just to ask, do we know if all features for regular filters are supported with ethernet-switching? addresses and ports look to be supported but what about advanced features such as qos, logging, etc?

[ProtonBruno]

Most features are supported but indeed there are some hardware limitations.
It's also the case for QFX filters: we had to remove logging or even filters in some scenario.
We can extend the unit tests to have more coverage and identify the gaps if you want to?