Update swarming.client repo

We've setup swarming server to be used as golo rpc.
To talk to the new server, cbuildbot needs to call
swarming.py in swarming.client. The current repo is too old that
some required features are missing. Update the repo to latest
revision: 0ec868bc7a6a72ca40e3cb508898e4e07f109ae1

BUG=chromium:520343
TEST=ran unittest: cbuildbot/run_test
TEST=bin/upload_symbols --dedupe --debug --testing --upload-limit 1 --board
daisy /tmp/chat.sym
TEST=bin/upload_symbols --debug --testing --upload-limit 1 --board
daisy /tmp/chat.sym

Change-Id: I4c7ddd12092d2de1e7cbc2adab4deb81f02e2e72
Reviewed-on: https://chromium-review.googlesource.com/297782
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
Commit-Queue: Fang Deng <fdeng@chromium.org>
Tested-by: Fang Deng <fdeng@chromium.org>
1 file changed
tree: e471901ead331f7988d9380ed358705ed633e1d3
  1. _remotes.xml
  2. full.xml
  3. project_sdk.xml
  4. README