[tools] Fix platform specification for scipi

TBR=machenbach@chromium.org

No-Try: true
Bug: chromium:616879
Change-Id: Icdd2489b64a4b29beb6d561eee8cb2f9c22a96ba
Reviewed-on: https://chromium-review.googlesource.com/1180201
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55197}

tools/callstats.py.vpython

@@ -33,12 +33,11 @@ wheel: <
   name: "infra/python/wheels/scipy/${vpython_platform}"
   version: "version:0.19.0"
   match_tag: <
-    platform: "manylinux-x64"
+    abi: "cp27mu"
+    platform: "manylinux1_i686"
   >
   match_tag: <
-    platform: "manylinux-x86"
-  >
-  match_tag: <
-    platform: "mac-x64"
+    abi: "cp27mu"
+    platform: "manylinux1_x86_64"
   >
 >