Use annotation from configerator

Summary:
Update thrift_cow library to parse AllowSkipThriftCow annotation
defined in configerator sourced thrift, and correspondingly
switch existing annotations in Thrift schema.

Differential Revision: D93127796

fbshipit-source-id: 94c1e88f3f22ee5287b931f5a262b942c4399648

Author: priyankw-meta

build/fbcode_builder/manifests/fboss

@@ -49,6 +49,7 @@ python-pyyaml
 [shipit.pathmap]
 fbcode/fboss/github = .
 fbcode/fboss/common = common
+fbcode/configerator/structs/neteng/fboss/thrift = configerator/structs/neteng/fboss/thrift
 fbcode/fboss = fboss
 
 [shipit.strip]