python: backport patch to fix CVE-2018-1000802

Backport a patch to fix the following CVE.

CVE: CVE-2018-1000802

(From OE-Core rev: c0343f1035af98cb451eea0de94c16fe89ffdf48)

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python_2.7.15.bb

@@ -31,6 +31,7 @@ SRC_URI += "\
   file://pass-missing-libraries-to-Extension-for-mul.patch \
   file://support_SOURCE_DATE_EPOCH_in_py_compile_2.7.patch \
   file://float-endian.patch \
+  file://0001-closes-bpo-34540-Convert-shutil._call_external_zip-t.patch \
 "
 
 S = "${WORKDIR}/Python-${PV}"