Junos: parsing inet6 unicast add-path

[dhalperi]

Stack:

• Junos: bgp validation parsing #9197
• Junos: parsing inet6 unicast add-path #9196 ⬅

⚠️ Part of a stack created by spr. Do not merge manually using the UI - doing so may have unexpected results.

[batfish-bot]

This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.13%. Comparing base (1bb7d38) to head (f5ac08e).
Report is 65 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9196      +/-   ##
==========================================
- Coverage   78.13%   78.13%   -0.01%     
==========================================
  Files        3313     3313              
  Lines      169934   169934              
  Branches    20039    20039              
==========================================
- Hits       132773   132772       -1     
- Misses      37161    37162       +1     

see 1 file with indirect coverage changes

[progwriter]

Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @dhalperi)