scripts: Sleep for 200ms between symbol uploads

To avoid looking like we're DoS'ing the symbol server, force a delay between
symbol uploads.  If this becomes a bottleneck for buildbots, this should be
modified to only upload symbol files that have changed, by checking against
the buildbot's previous debug.tgz.

BUG=chromium-os:26596
TEST=Manually ran upload_symbols against staging symbol server

Change-Id: Iecf11e26a70f0c44838fb13e2ebc6ebb78336c50
Reviewed-on: https://gerrit.chromium.org/gerrit/19566
Commit-Ready: Michael Krebs <mkrebs@chromium.org>
Reviewed-by: Michael Krebs <mkrebs@chromium.org>
Tested-by: Michael Krebs <mkrebs@chromium.org>
1 file changed