Allow zip64 support when opening zip files

When opening an zip file through zipfile.ZipFile(), python2 by default
disables zip64 support. To support update files >4GB, we manually add
allowZip64 to override the setting.

Test: generate && serve an OTA

Change-Id: I9645e963ced830cc2d3a4b72bc63b9369a1cefe8
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index c77d8c6..f5dfbec 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -1568,7 +1568,7 @@
   cmd = ["unzip", "-o", "-q", filename, "-d", dirname]
   if patterns is not None:
     # Filter out non-matching patterns. unzip will complain otherwise.
-    with zipfile.ZipFile(filename) as input_zip:
+    with zipfile.ZipFile(filename, allowZip64=True) as input_zip:
       names = input_zip.namelist()
     filtered = [
         pattern for pattern in patterns if fnmatch.filter(names, pattern)]