IOS-XR: missing reference for route-policy apply

[dhalperi]

Fix #4227

[batfish-bot]

This change is 

[haverma]

Reviewed 5 of 5 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved

[codecov]

Codecov Report

Merging #4237 into master will decrease coverage by 0.16%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master    #4237      +/-   ##
============================================
- Coverage     75.42%   75.25%   -0.17%     
+ Complexity    25456    25366      -90     
============================================
  Files          2070     2070              
  Lines        101247   101251       +4     
  Branches      12147    12147              
============================================
- Hits          76362    76193     -169     
- Misses        19383    19563     +180     
+ Partials       5502     5495       -7

Impacted Files	Coverage Δ	Complexity Δ
...tfish/representation/cisco/CiscoConfiguration.java	84.08% <ø> (ø)	531 <0> (ø)	⬇️
...fish/representation/cisco/CiscoStructureUsage.java	100% <100%> (ø)	3 <0> (ø)	⬇️
...fish/grammar/cisco/CiscoControlPlaneExtractor.java	66.88% <100%> (+0.01%)	1463 <1> (ø)	⬇️
...atfish/bddreachability/transition/Transitions.java	0% <0%> (-95.17%)	0% <0%> (-93%)
...java/org/batfish/dataplane/ibdp/VirtualRouter.java	88.7% <0%> (+0.21%)	255% <0%> (+1%)	⬆️
...c/main/java/org/batfish/dataplane/rib/RibTree.java	93.87% <0%> (+4.08%)	28% <0%> (+1%)	⬆️