Cumulus: convert BGP confederation configs

[progwriter]

No description provided.

[batfish-bot]

This change is 

[corinaminer]

Reviewed 4 of 4 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved

[codecov]

Codecov Report

Merging #4961 into master will decrease coverage by <.01%.
The diff coverage is 83.33%.

@@             Coverage Diff              @@
##             master    #4961      +/-   ##
============================================
- Coverage     76.57%   76.56%   -0.01%     
+ Complexity    29848    29841       -7     
============================================
  Files          2384     2384              
  Lines        115085   115091       +6     
  Branches      13605    13606       +1     
============================================
  Hits          88124    88124              
+ Misses        20290    20284       -6     
- Partials       6671     6683      +12

Impacted Files	Coverage Δ	Complexity Δ
...presentation/cumulus/CumulusNcluConfiguration.java	92.72% <83.33%> (-0.07%)	224 <0> (+1)
...java/org/batfish/symbolic/state/EdgeStateExpr.java	73.91% <0%> (-4.35%)	10% <0%> (-1%)
...c/main/java/org/batfish/dataplane/rib/RibTree.java	89.58% <0%> (-4.17%)	27% <0%> (-1%)
...ain/java/org/batfish/symbolic/IngressLocation.java	65.78% <0%> (-2.64%)	15% <0%> (-1%)
...org/batfish/datamodel/flow/BidirectionalTrace.java	81.81% <0%> (-2.28%)	14% <0%> (-1%)
...col/src/main/java/org/batfish/role/InferRoles.java	90.15% <0%> (-1.52%)	63% <0%> (-2%)
...java/org/batfish/dataplane/ibdp/VirtualRouter.java	87.67% <0%> (-0.34%)	255% <0%> (-2%)
...batfish/src/main/java/org/batfish/main/Driver.java	38.55% <0%> (+0.24%)	28% <0%> (ø)	⬇️
...a/org/batfish/job/ParseVendorConfigurationJob.java	73.93% <0%> (+3.19%)	31% <0%> (+1%)	⬆️