Cisco: parse and track refs in ip[v6] local policy route-map

[dhalperi]

Fix #6339.

[batfish-bot]

This change is 

[progwriter]

Reviewed 9 of 9 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @arifogel)

[codecov]

Codecov Report

Merging #6341 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master    #6341   +/-   ##
=========================================
  Coverage     72.94%   72.95%           
- Complexity    35092    35094    +2     
=========================================
  Files          2828     2828           
  Lines        142541   142553   +12     
  Branches      17138    17138           
=========================================
+ Hits         103982   103995   +13     
+ Misses        30330    30328    -2     
- Partials       8229     8230    +1     

Impacted Files	Coverage Δ	Complexity Δ
...fish/grammar/cisco/CiscoControlPlaneExtractor.java	65.46% <100.00%> (+0.06%)	1209.00 <2.00> (+2.00)
...fish/representation/cisco/CiscoStructureUsage.java	100.00% <100.00%> (ø)	3.00 <0.00> (ø)
...main/java/org/batfish/datamodel/acl/AclTracer.java	60.37% <0.00%> (-1.26%)	43.00% <0.00%> (-1.00%)
...a/org/batfish/representation/aws/LoadBalancer.java	82.18% <0.00%> (-0.32%)	70.00% <0.00%> (-1.00%)
...src/main/java/org/batfish/coordinator/WorkMgr.java	76.02% <0.00%> (+0.31%)	247.00% <0.00%> (+1.00%)