ignore space when applying oss patches

Summary: As titled, ignore space when applying oss patches. Certain source code will use tabs instead of spaces (for eg, iproute2) and the patch fails when applying;

Reviewed By: shri-khare

Differential Revision: D51971636

fbshipit-source-id: 094983d142a039428da4cd9f980d6f30ca3e50fa

build/fbcode_builder/getdeps/builder.py

@@ -113,7 +113,7 @@ def _apply_patchfile(self) -> None:
         patchfile = os.path.join(
             self.build_opts.fbcode_builder_dir, "patches", self.patchfile
         )
-        patchcmd = ["git", "apply"]
+        patchcmd = ["git", "apply", "--ignore-space-change"]
         if self.patchfile_opts:
             patchcmd.append(self.patchfile_opts)
         try: