Update headers for folly-config.h path

Summary:
X-link: facebookexperimental/rust-shed#55

We need this change for build fizz

Reviewed By: bigfootjon

Differential Revision: D58119016

fbshipit-source-id: 16d1c0b2e873cd8d460caca311034516575374f1

Author: namanahuja

shim/shims.bzl

@@ -142,6 +142,10 @@ def cpp_library(
         deps += _select_os_deps(_fix_dict_deps(os_deps))
     if headers == None:
         headers = []
+    if tags != None and "oss_dependency" in tags:
+        oss_depends_on_folly = read_config("oss_depends_on", "folly", False)
+        if oss_depends_on_folly:
+            headers = [item.replace("//:", "//folly:") if item == "//:folly-config.h" else item for item in headers]
     if is_select(srcs) and auto_headers == AutoHeaders.SOURCES:
         # Validate `srcs` and `auto_headers` before the config check
         base_path = native.package_name()