extract_utils: Generate deodexed apk/jar with consistent checksum

* zip stores timestamp for all included files. The timestamps of dex
   files are different across different runs, result in inconsistent
   checksum of output apk/jar.
 * Workaround the issue by using fixed timestamp for dex files.

Change-Id: I21f3a7e32cdfdb07c5f5c140df2e797efd4a8005

extract_utils.sh

@@ -1590,6 +1590,7 @@ function extract() {
         if [[ "$FULLY_DEODEXED" -ne "1" && "${VENDOR_REPO_FILE}" =~ .(apk|jar)$ ]]; then
             oat2dex "${VENDOR_REPO_FILE}" "${SRC_FILE}" "$SRC"
             if [ -f "$TMPDIR/classes.dex" ]; then
+                touch -t 200901010000 "$TMPDIR/classes"*
                 zip -gjq "${VENDOR_REPO_FILE}" "$TMPDIR/classes"*
                 rm "$TMPDIR/classes"*
                 printf '    (updated %s from odex files)\n' "${SRC_FILE}"