Fix xplat OpenSSLCertUtilsTest/OpenSSLCertUtilsTest.TestX509* tests

Summary:
This change aliases the .pem resource files to the xplat OpenSSLCertUtilsTest/OpenSSLCertUtilsTest.TestX509* tests.

The tests were failing because the .pem resources were not provided to the test. This happened because the `resources` parameter of the `folly_cxx_test` macro was not passed down to `native.cxx_test`.

The changes to the `BUCK` files closely match the code used in `TARGETS`. They do not completely match because there are xplat targets that rely on `//xplat/folly/io/async/test:cert`. This change puts the export_file of `*.pem` files into `//xplat/folly/io/async/test` instead of `//xplat/folly/io/async/test/certs` because causes a conflict with a tupperware target.

I remove the conditional logic around FOLLY_REPO done in D56953408 because it is no longer required with `resources`.

Reviewed By: Gownta

Differential Revision: D57178724

fbshipit-source-id: 063c603084bf52854e15d7cd36e0918da019f46c

folly/defs.bzl

@@ -197,10 +197,17 @@ def folly_cxx_test(
         deps = [],
         contacts = [],
         **kwargs):
+    # resources is cherry picked because some of the other kwargs
+    # have issues that need to be investigated.
+    # e.g., Some args are duplicated. Some args cause TSAN errors.
+    # TODO(T188948036): Fix xplat/folly:folly-futures-test and folly_cxx_test
+    resources = kwargs.get("resources", [])
+
     fb_xplat_cxx_test(
         name = name,
         srcs = srcs,
         raw_headers = raw_headers,
+        resources = resources,
         include_directories = _compute_include_directories(),
         deps = deps + [
             "//xplat/folly/test/common:test_main",

folly/io/async/test/certs/defs.bzl

@@ -6,3 +6,11 @@ def alias_pem(pems: list[str]):
             name = pem,
             actual = "//folly/io/async/test/certs:{pem}".format(pem = pem),
         )
+
+def alias_pem_for_xplat(pems: list[str]):
+    # in xplat these pem files are exported in //xplat/folly/io/async/test
+    for pem in pems:
+        alias(
+            name = pem,
+            actual = "//xplat/folly/io/async/test:certs/{pem}".format(pem = pem),
+        )