Consider only pawns as CTF path blockers

Consider only pawns as CTF path blockers

kingofthehill STC
LLR: 2.97 (-2.94,2.94) [0.00,10.00]
Total: 860 W: 418 L: 316 D: 126
http://www.variantfishtest.org:6543/tests/view/5eb10e4e6e23db36d55f2aa6

kingofthehill LTC
LLR: 2.96 (-2.94,2.94) [0.00,10.00]
Total: 1112 W: 525 L: 420 D: 167
http://www.variantfishtest.org:6543/tests/view/5eb171106e23db36d55f2ab4

racingkings STC
LLR: 2.95 (-2.94,2.94) [-10.00,5.00]
Total: 1942 W: 635 L: 597 D: 710
http://www.variantfishtest.org:6543/tests/view/5eb1303d6e23db36d55f2aac

racingkings LTC
LLR: 2.95 (-2.94,2.94) [-10.00,5.00]
Total: 8208 W: 2257 L: 2257 D: 3694
http://www.variantfishtest.org:6543/tests/view/5eb1bdae6e23db36d55f2ab7