cumulus frr parse and convert route-map set metric-type

[arifogel]

No description provided.

[batfish-bot]

This change is 

[codecov]

Codecov Report

Merging #6656 (364164e) into master (c7d00a4) will decrease coverage by 0.00%.
The diff coverage is 68.18%.

@@             Coverage Diff              @@
##             master    #6656      +/-   ##
============================================
- Coverage     73.49%   73.49%   -0.01%     
- Complexity    36577    36584       +7     
============================================
  Files          2928     2930       +2     
  Lines        147294   147316      +22     
  Branches      17763    17764       +1     
============================================
+ Hits         108251   108265      +14     
- Misses        30515    30521       +6     
- Partials       8528     8530       +2     

Impacted Files	Coverage Δ	Complexity Δ
.../representation/cumulus/RouteMapSetMetricType.java	50.00% <50.00%> (ø)	2.00 <2.00> (?)
...ar/cumulus_frr/CumulusFrrConfigurationBuilder.java	76.83% <62.50%> (-0.15%)	212.00 <2.00> (+2.00)	⬇️
.../batfish/representation/cumulus/RouteMapEntry.java	98.50% <100.00%> (+0.06%)	42.00 <2.00> (+2.00)
...ish/representation/cumulus/RouteMapMetricType.java	100.00% <100.00%> (ø)	1.00 <1.00> (?)
...src/main/java/org/batfish/coordinator/PoolMgr.java	59.52% <0.00%> (-1.20%)	15.00% <0.00%> (-1.00%)

[ratulm]

Reviewed 8 of 8 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @dhalperi)