NX-OS: route-map match as-number

[dhalperi]

https://www.cisco.com/c/m/en_us/techdoc/dc/reference/cli/nxos/commands/bgp/match-as-number.html

This is used

to provide a list of AS numbers or an AS-path access list using a regular
expression. BGP uses this match criteria to determine which BGP peers to
create a BGP session with.

[batfish-bot]

This change is 

[progwriter]

Reviewed 10 of 11 files at r1, 1 of 1 files at r2.
Reviewable status: complete! all files reviewed, all discussions resolved

[progwriter]

Reviewed 1 of 1 files at r3.
Reviewable status: complete! all files reviewed, all discussions resolved

[codecov]

Codecov Report

Merging #6231 into master will decrease coverage by 0.02%.
The diff coverage is 73.91%.

@@             Coverage Diff              @@
##             master    #6231      +/-   ##
============================================
- Coverage     72.96%   72.93%   -0.03%     
+ Complexity    34967    34963       -4     
============================================
  Files          2827     2828       +1     
  Lines        142382   142387       +5     
  Branches      17100    17100              
============================================
- Hits         103885   103854      -31     
- Misses        30284    30305      +21     
- Partials       8213     8228      +15     

Impacted Files	Coverage Δ	Complexity Δ
...resentation/cisco_nxos/CiscoNxosConfiguration.java	88.30% <50.00%> (-0.05%)	358.00 <0.00> (ø)
...mar/cisco_nxos/CiscoNxosControlPlaneExtractor.java	76.11% <58.33%> (-0.06%)	1027.00 <2.00> (+2.00)	⬇️
...src/main/java/org/batfish/datamodel/LongSpace.java	88.23% <100.00%> (+0.35%)	15.00 <1.00> (+1.00)
...tfish/representation/cisco_nxos/RouteMapEntry.java	100.00% <100.00%> (ø)	52.00 <2.00> (+2.00)
...presentation/cisco_nxos/RouteMapMatchAsNumber.java	100.00% <100.00%> (ø)	3.00 <3.00> (?)
...rg/batfish/identifiers/StorageBasedIdResolver.java	88.88% <0.00%> (-4.45%)	27.00% <0.00%> (ø%)
.../org/batfish/dataplane/rib/RouteAdvertisement.java	84.78% <0.00%> (-4.35%)	16.00% <0.00%> (-1.00%)
...c/main/java/org/batfish/dataplane/rib/RibTree.java	89.58% <0.00%> (-4.17%)	27.00% <0.00%> (-1.00%)
...rc/main/java/org/batfish/datamodel/flow/Trace.java	80.64% <0.00%> (-3.23%)	13.00% <0.00%> (-1.00%)
.../org/batfish/representation/aws/SecurityGroup.java	52.30% <0.00%> (-2.49%)	18.00% <0.00%> (+3.00%)	⬇️
... and 14 more