XR: basic support for bundle interfaces

[dhalperi]

Fix #6018

[batfish-bot]

This change is 

[codecov]

Codecov Report

Merging #6019 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master    #6019   +/-   ##
=========================================
  Coverage     72.24%   72.25%           
+ Complexity    34352    34351    -1     
=========================================
  Files          2810     2810           
  Lines        140938   140939    +1     
  Branches      16935    16936    +1     
=========================================
+ Hits         101827   101837   +10     
+ Misses        31161    31151   -10     
- Partials       7950     7951    +1     

Impacted Files	Coverage Δ	Complexity Δ
...grammar/cisco_xr/CiscoXrControlPlaneExtractor.java	19.36% <100.00%> (+0.16%)	326.00 <2.00> (+4.00)
.../representation/cisco_xr/CiscoXrConfiguration.java	51.00% <100.00%> (+0.25%)	110.00 <16.00> (+2.00)
...org/batfish/representation/cisco_xr/Interface.java	53.26% <100.00%> (+1.08%)	64.00 <2.00> (+1.00)
.../src/main/java/org/batfish/datamodel/flow/Hop.java	53.33% <0.00%> (-6.67%)	5.00% <0.00%> (-1.00%)
...batfish/representation/aws/LoadBalancerTarget.java	54.16% <0.00%> (-4.17%)	7.00% <0.00%> (-2.00%)
...rc/main/java/org/batfish/datamodel/flow/Trace.java	87.09% <0.00%> (-3.23%)	11.00% <0.00%> (-2.00%)
...org/batfish/datamodel/flow/BidirectionalTrace.java	81.81% <0.00%> (-2.28%)	14.00% <0.00%> (-1.00%)
...src/main/java/org/batfish/coordinator/PoolMgr.java	62.92% <0.00%> (-1.13%)	15.00% <0.00%> (-1.00%)

[progwriter]

Reviewed 7 of 7 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved

[dgarros]

Thank you for this super quick fix, I'll test it in the next build